time value of money ahmed hassan
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TVMTRANSCRIPT
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Dr. Kamrul Hasan Dr. Kamrul Hasan
Assistant Professor, AIUBAssistant Professor, AIUB
Time Value of Time Value of MoneyMoney
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Chapter OutlineChapter OutlineIntroduction
Basic of Time Value of Money
Present value
Future Value
Concept of Interest
Concept of Annuity
Rule of 72
Rule of 69
Perpetuity and Growing perpetuity
EAR and APR
Summary and Conclusion
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“ “ Time is more value than money. You can Time is more value than money. You can
get more money but cannot get more get more money but cannot get more
time.” time.”
– – Jim RohnJim Rohn
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Time Value of Time Value of Money Money
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The basic idea behind the concept of time value of
money is: TK.1 received today is worth more than Tk.1 in the
future OR OR Tk.1 received in the future is worth less than Tk.1
today
Why?Why?
because interest can be earned on the money
The connecting piece or link between present (today)
and future is the interest or discount rate
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∆ If you invest your 1 taka for 1 year at a 12% annual
interest rate. (12% interest rate & one-year period)
∆ Then at the end of one year you will accumulate 1.12
taka, you can say that future value of 1 taka is 1.12.
∆ So, present value of the 1.12 taka you expect to
receive in one year is only 1 taka.
∆ A key concept of time value of money is that:
∆ A single sum of money or a series of equal, evenly spaced
payment or receipts promised in the future can be converted to
an equivalent value today.
Time Value of Money Time Value of Money
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Time Value of Money Time Value of Money
Time Value of Money (TVM) concept is used to
measure and evaluate many business and financial
transactions, including:
Investment analysis Capital budgeting decisions Stocks, bonds and other securities Long-term Leases Long-term capital assets Accounts receivable Accounts payable Pensions and retirement plans Mergers and acquisitions Assets depreciation Working capital management
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Identify the VariablesIdentify the VariablesThere are five variables every time value of money has.
One should identify the variables. Those variable are:
Present Value (PV):
Any value that occurs at the beginning of the problem is a Present Value. It is an amount today that is equivalent to a future payment, or series of payments, that has been discounted by an appropriate interest rate.
Future Value (FV):
Future Value is the amount of money that an investment with fixed, compounded interest rate will grow to by some future date. The investment can be a single sum deposited at the beginning of the first period, a series of equally spaced payments (an annuity), or both.
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Identify the VariablesIdentify the VariablesInterest Rate (r):
Interest is a charge for borrowing money, usually stated as a percentage of
the amount borrowed over a specific period of time. Interest is two types: (1)
Simple interest & (2) Compound interest.
Annuity Payment (Pmt):
An annuity payment is a series of two or more equal payments that occur at
regular time intervals.
Number of Periods (t):
The number of periods is the total length of time that the investment will
be held. Periods are evenly spaced intervals of time.
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Present Value is Related Present Value is Related to…….to…….
PV is positively related to FVPV is inversely related to the interest ratePV is inversely related to the number of periodsPV is positively related to annuity payment
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Two Concepts of Interest: Two Concepts of Interest: Simple & Simple & CompoundCompound
Simple interest refers to situation when interest is earned on a principle only.
Compound interest refers the situation the interest is earned on the original principle amount as well as any interest earned that accumulated with the principal.
Compound and simple interest differs on one principle the simple interest won’t earn interest whereas compound interest does earn interest on interest along with principal.
On the other hand, Continuous compound interest counts on interest earned on principal daily and also counts the interest on that interest earned principle compounded daily.
Continuous compounding happens when interest is charged against principle and compound continuously, that is the interest is continuously added to principle to be charged interest again.
Continuous compounding can be used to determine the future value of a current amount when interest is compounded continuously
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Concepts of InterestConcepts of InterestInterest rate (12%) Year 1 Year 10 Year 50
Simple 1.12 2.20 7.00
Compound 1.12 3.105 289.00
Continuous compound
1.127 3.319 403.031
Here in the chart you could see the expected return of 1 taka which
earns 12% annually what should be the
expected return on various time line at simple, compound and
continuous compound
interest rate.
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Calculating the Future Value Using Simple Calculating the Future Value Using Simple Interest RateInterest Rate
Problem 2.1
If you deposit 10,000 taka in a bank account that earns 12% If you deposit 10,000 taka in a bank account that earns 12%
simplesimple interest for 5 years then how much money would you interest for 5 years then how much money would you
have after that period?have after that period?
The equation for simple interest rate is quite straightforward.
FV using simple interest rate =
Principal + Principal*interest rate*time or P+P*r*tPrincipal + Principal*interest rate*time or P+P*r*t
So, you get 10,000 + 10,000 * 0.12 * 5 = 10,000 + 6,000 =
16,000 tk
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Simple formula of Calculating Future ValueSimple formula of Calculating Future Value
Future Value (FV)= Present Value (PV) + [Present Value (PV) * Interest Rate (r)] for 1 year.
However, if the investment is for two years then,
FV= PV + [PV*r] + {[PV + (PV*r)]*r}
Or, FV= PV(1+r+r+1²) , [1²+2.1.r+r² = (1+r)²]
Or, FV = PV (1+r)² for two years.
So the generalized equation for the future value formula will be:
Future Value = Present Value * (1+interest rate)time
Or, FV = PV (1 + r)t
So if we try to solve the problem 2.1 using compound interest rate then the expected return would be:
FV = 10,000 (1+0.12)5 = 17,623.42 taka
You could see the difference of 1623.42 taka due to earning interest on interest. The number looks astronomical once you use a longer time period like the graph has shown.
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Calculating Future Value Using Compound Calculating Future Value Using Compound InterestInterest
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Monthly CompoundedMonthly Compounded
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Continuously CompoundingContinuously Compounding
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Continuously CompoundingContinuously Compounding
Formula, Where, Here,
FV = PV(1+r1)(1+r2)(1+r3) FV = Future Value FV = ?
PV = Present Value PV =
100,000
r1 = Year-1 interest rate r1=
0.12
r2= Year-2 interest rate r2=
0.18
r3= Year-3 interest rate r3=
0.08
FV= PV (1+ rFV= PV (1+ r11) (1+ r) (1+ r22) (1+ r) (1+ r33) )
So. FV= 100,000 (1+ 0.12) (1+ 0.18) (1+ 0.08)So. FV= 100,000 (1+ 0.12) (1+ 0.18) (1+ 0.08)
Or, FV= 142,732.8 takaOr, FV= 142,732.8 taka
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Calculating Present Value Using Compound Calculating Present Value Using Compound InterestInterest
If, FV = PV (1+r)t then we can rewrite,
PV= FV/(1+r)t
PV= 2000000/(1+0.12)5
PV= 1,134,854 taka
Here, we can see that 1,134,854
taka is equivalent to 20 lac after 5
years if you are earning 12% interest
annually.
The process by which
future cash flows are
adjusted to reflect
these factors is
called “discounting”.
It is used to calculate
PV.Boier Desh PublicationsBoier Desh Publications
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Calculating Present Value Using Compound Calculating Present Value Using Compound InterestInterest
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Finding the Interest RateFinding the Interest Rate
Interest rate and the number of periods must always agree
as to the length of a time period.
Example: semi-annually (2), quarterly (4), weekly (52), or
even daily (365) then you need to adjust accordingly.
Interest rate problem could be solved by using basic TVM
formula.
Here, FV = PV (1+r)t
Or, (1+r)t = FV/PV
Or, (1+r)t/t = (FV/PV)(1/t)
So, r = (FV/PV)r = (FV/PV)(1/t) (1/t) -1-1
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Finding the Interest RateFinding the Interest Rate
Solution: r = (FV/PV)(1/t) -1Since, you know the interest rate of first bank, all you need to find the rate for the other two banks.
For the 2nd bank that doubles your money in 5 years the interest rate will be:
r = (20000/10000)(1/5)-1 = 1.1486-1 = 14.86%
If you want to triple your money in 8 years the interest rate will be: r = (30000/10000)(1/8)-1 = 1.1472-1 = 14.72%
So, it is better to put money in the second bank, bcz second bank double your money after 5 years & you are earning the highest interest rate of 14.86% among the three banks. Boier Desh PublicationsBoier Desh Publications
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Finding the Time PeriodsFinding the Time PeriodsTo find the time periods we use the basic FV formula to derive the equation for t.Here, FV = PV (1+r)t
Or, (1+r)t = FV/PV
ln (1+r)t = ln (FV/PV) t.ln (1+r)t = ln (FV/PV)
So, t = ln (FV/PV)/ln (1+r)
Problem- 2.8Problem- 2.8If you want to Invest 5000 taka today at an annual interest rate of 11%,
how long do you have to wait to receive 20,000 taka?
Solution:Solution:Here, t = ln (FV/PV)/ ln (1+r)Here, t = ln (FV/PV)/ ln (1+r)
Or, t = ln (20,000/5,000)/ ln(1+0.11)Or, t = ln (20,000/5,000)/ ln(1+0.11)Or, t = 1,38629/ 0.10436Or, t = 1,38629/ 0.10436
Or, t = 13.283 years.Or, t = 13.283 years.So, you have to wait 13.283 yearsSo, you have to wait 13.283 years.
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The Intuitive Basis for Present Value The Intuitive Basis for Present Value
There are three reason why a cash flow in the future is worth
less than a similar cash flow today. Those reasons are:
1. Individual prefer present consumption to future consumption.
2. Monetary Inflation
3. A promised cash flow might not be delivered for a number of
reasons:
The promised might default on payment
The promisee might not be around to receive payment
Some other contingency might intervene to prevent or reduce the
promised payment
Or any uncertainty (risk) associated with cash flow in the future reduces the
value of the cash flow.
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Double Your Money!!!Double Your Money!!!
We will use the “Rule-of-72”We will use the “Rule-of-72”
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Years to Double = 72 / iYears to Double = 72 / i72/12% = 6 Years (Approx)72/12% = 6 Years (Approx)
Years to Double = 72 / iYears to Double = 72 / i72/12% = 6 Years (Approx)72/12% = 6 Years (Approx)
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Double Your Money!!!Double Your Money!!! A general rule estimating how long it will take for an
investment to double, assuming continuously
compounding interest.
Can calculates this by dividing 69 by the “rate of
return” .
“Rule of 69” is not exact
But provides a quick look at the effects of
compounding on an investment
“Rule of 69” is similar to the “Rule of 72”
But “Rule of 72” is more useful for non-continuously
compounding interestBoier Desh PublicationsBoier Desh Publications
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PV dealing with multiple, uneven cash flows
The key to finding the PV of multiple, uneven cash flows are to compound each cash flow separately for the appropriate number of time periods and earned interest rate.
Problem- 2.9Problem- 2.9What is the present value of receiving 50,000 taka in one year, 75,000 What is the present value of receiving 50,000 taka in one year, 75,000 taka in two years, and 10,000 taka in three years if the interest rate is taka in two years, and 10,000 taka in three years if the interest rate is
13.5%?13.5%?
Solution:
PV of 50,000 taka is 50,000/ (1+ 0.135) = 44,052.86 taka
PV of 75,000 taka is 75,000/ (1+ 0.135)²= 58,219.64 taka
PV of 100,000 taka is 100,000/ (1+0.135)³= 68,393.11 taka
So, the PV of the series of cash flows is simply their combined PV:
Total PV = 44,052.86 + 58,219.64 + 63,393.11 = 1,70,665.62 Total PV = 44,052.86 + 58,219.64 + 63,393.11 = 1,70,665.62
taka.taka. Boier Desh PublicationsBoier Desh PublicationsFoundation of Financial Management, 1/eFoundation of Financial Management, 1/e
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Types of AnnuitiesTypes of Annuities
An annuity is a series of equal payments (inflows or
outflows) for a certain number of time periods.
There are two types of annuities, those are:
Ordinary Annuity: Payments or receipts occur at the end of
each period, it is also called deferred annuity. Example:
Bond that pays interest on the last day of the month.
Annuity DueAnnuity Due: Payments or receipts occur at the beginning
of each period. Example: A mortgage payment or house
rent which is usually due on the first day of the month.
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Parts of an AnnuityParts of an Annuity
0 1 2 3
$1000 $1000 $1000
(Ordinary Annuity)EndEnd ofPeriod 1
EndEnd ofPeriod 2
Today EqualEqual Cash Flows Each 1 Period
Apart
EndEnd ofPeriod 3
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PV of an Ordinary AnnuityPV of an Ordinary Annuity
To determine today’s value of a series of future
payments, need to use the formula of present value
of an ordinary annuity.
PV of ordinary annuity calculates the present value of
coupon payments that will receive in the future.
Simple logic of PV of an ordinary annuity is receiving
a series of payment of 1,000 taka at a different time
period is less today than receiving a lump sum cash
flow of 5,000 tk today.
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Assume that interest rate is 14% and the PV of an annuity that pays 1,000 tk per year for five year.
Let’s find the value of this ordinary annuity using formula:
PVordinary annuity = Payment*[1-(1+r/n)-t*n ÷ r/n]
PVordinary annuity = 1000[1-(1+0.14)-5 ÷ 0.14]
PVordinary annuity = 3433.08 taka
PV of an Ordinary AnnuityPV of an Ordinary Annuity
Here,
PV ordinary annuity of Year – 1: 1000(1+0.14)-1 = 877.19PV ordinary annuity of Year – 2: 1000(1+0.14)-2 = 769.46PV ordinary annuity of Year – 3: 1000(1+0.14)-3 = 674.97PV ordinary annuity of Year – 4: 1000(1+0.14)-4 = 592.08PV ordinary annuity of Year – 5: 1000(1+0.14)-5 = 519.36
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Parts of an AnnuityParts of an Annuity
0 1 2 3
$1000 $1000 $1000
(Annuity Due)BeginningBeginning of
Period 1
BeginningBeginning ofPeriod 2
Today EqualEqual Cash Flows Each 1 Period Apart
BeginningBeginning ofPeriod 3
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PV of an Annuity DuePV of an Annuity Due
Assume that interest rate is 14% and the PV of an annuity that pays 1,000 tk per year for five year.
Formula.
PV annuity due = Payment*[1-(1+r/n)-t*n * (1+r/n) ÷r/n]
PV annuity due = 1000[1-(1+0.14)-5 * (1+0.14)÷ 0.14] = 3913.71 Taka
Here, PV annuity due of Year – 0: 1000(1+0.14)-o = 1,000
PV annuity due of Year – 1: 1000(1+0.14)-1 = 877.19PV annuity due of Year – 2: 1000(1+0.14)-2 = 769.46PV annuity due of Year – 3: 1000(1+0.14)-3 = 674.97PV annuity due of Year – 4: 1000(1+0.14)-4 = 592.08
3913.71
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FV of an Ordinary AnnuityFV of an Ordinary Annuity FV of an ordinary annuity measures how much you would have in the future given a specified rate of return.
Assume that interest rate is 14% and the FV of an annuity that pays 1,000 tk per year for five year.
Formula, FV ordinary annuity = Pmt*{(1+r/n)t*n-1} ÷r/n]
FV ordinary annuity = 1000*{(1+0.14)4-1} ÷0.14] = 6610.10 taka.
Here,
FV ordinary annuity of Year – 0: 1000(1+0.14)0 = 1,000.00FV ordinary annuity of Year – 2: 1000(1+0.14)1= 1140.00FV ordinary annuity of Year – 3: 1000(1+0.14)2 = 1299.60FV ordinary annuity of Year – 4: 1000(1+0.14)3 = 1481.54FV ordinary annuity of Year – 5: 1000(1+0.14)4 = 1688.96
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FV of an Annuity DueFV of an Annuity Due
Assume that interest rate is 14% and the FV of an annuity that pays 1,000 tk per year for five year.
Formula.
FV annuity due = Pmt*{(1+r/n)t*n-1}*(1+r/n)} ÷ r/nFV annuity due = 1000*{(1+0.14)5-1}*(1+0.14)} ÷ 0.14 = 7,535 taka
Here, FV annuity due of Year – 1: 1000(1+0.14)1 = 1,140
FV annuity due of Year – 2: 1000(1+0.14)2 = 1299 FV annuity due of Year – 3: 1000(1+0.14)3 = 1481.54 FV annuity due of Year – 4: 1000(1+0.14)4 = 1688.96 FV annuity due of Year – 5: 1000(1+0.14)5 = 1925.41
7535 taka
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PV of a Growing AnnuityPV of a Growing Annuity
The PV of growing annuity formula calculates the present
day value of a series of future periodic payments that grow at
a proportionate rate.
It may sometime referred to as an increasing annuity.
Example of an growing annuity would be an individual who
receive Tk. 100 the first year and successive payments
increase by 10% per year for a total three years.
[ Tk.100>Tk.110>Tk.121]
Formula of PV of a growing annuity = P÷(r-g)*[1-{(1+g) ÷
(1+r)}t ]
Here, P = first payment, r = interest payment, g = growth
rate, and t = number of year.Boier Desh PublicationsBoier Desh Publications
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PV of a Growing AnnuityPV of a Growing AnnuityProblem -2.16
Suppose you have just won the first prize in a lottery. The lottery offers you two possibilities for receiving your prize. The first
possibility is to receive a payment of 10,000 taka at the end of the year, and then, for the next 15 years this payment will be repeated, but it will grow at a rate of 5%. The interest rate is 12% during the entire period. The second possibility is to receive 100,000 tk right
now. Which one out of the two possibilities would you take?
Here,P = 10,000; r = 0.12; g = 0.05; t = 16PV of a growing annuity = P÷(r-g)*[1-{(1+g) ÷ (1+r)}t ] = 10,000÷(0.12-0.05)*[1-{(1+0.05) ÷ (1+0.12)}16 ] = Tk. 91,989.41Tk. 91,989.41 < Tk. 100,000 therefore, you would prefer to be paid out right now.
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FV of Growing AnnuityFV of Growing Annuity
The formula of future value of growing annuity is used to calculate the future amount of a series of cash flows, or payments, that grow at a proportionate rate. Fv of a growing annuity = P*[{(1+r)t – (1+g)t} ÷ (r-g)]
Problem – 2.17Problem – 2.17If an employee saves 20000 tk per year which increases by 5% every If an employee saves 20000 tk per year which increases by 5% every year and earns 12% annual interest year and earns 12% annual interest then after 10 years , how much after 10 years , how much
would she have? would she have?
FV of this growing annuity =
20000*[{(1+0.12)10 – (1+0.05)10} ÷ (0.12-0.05)]
= 431,295.35 taka.
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PerpetuitiesPerpetuities
Perpetuity is a type of annuity that receives an infinite amount of periodic
payment.
Perpetuity is a constant cash flow at a regular intervals forever.
Formula of PV of Perpetuity = c/r
Here, c = coupon payment & r = interest rate.
Assume that you have a 12% coupon console bond. The value
of this bond, if the interest rate is 9% is as follows:
Value of Console Bond = 120/0.09 = 1,333.33 taka.
The value of a console will be equal to its face value only if the coupon rate is equal to the interest rate.
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Growing PerpetuityGrowing Perpetuity A growing perpetuity is the same as a regular perpetuity (C/r), but just like
the cash flow is growing ( or declining) each year.
PV of growing perpetuity = c/(r-g)
Where, C= Initial cash flow or coupon payment, r= Interest rate, g= Growth
rate. Problem 2.18When would you be willing to pay for financial instrument, which promises you to pay cash payment of 25,000 tk at the end of the each year, which
will increase every year by 5%, forever. The annual interest rate is fixed at 12%
What would you be willing to pay if the financial instrument paid out its first 25,000 tk right now, and everything else being same?
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Solution PV of Growing Annuity = 25,000 / (0.12 – 0.05) = 357,142.85 taka.PV = [(25000 * 1.05) / (0.12 – 0.05)] + 25,000 = 400,000 taka.
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EAR & APREAR & APR
Effective Annual Interest RateEffective Annual Interest Rate
The actual rate of interest earned (paid) after adjusting the nominal rate
for factors such as the number of compounding periods per year.
EAR (%) = (1+rnomibal /n)n – 1
Here, n is number of compounding in a year.
EAR for continuous compounding = er - 1
Annual Percentage RateAnnual Percentage Rate
APR is defined as the period rate × the number of periods per year.
Periodic Rate = rnominal / n
rnominal = Periodic Rate × n = APR.
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See Problem – 2.19, Page - 45
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Summary and ConclusionsSummary and Conclusions
The financial manager uses the time value of money approach to value cash flows that occur at different points in time
A dollar invested today at compound interest will grow a larger value in future. That future value, discounted at compound interest, is equated to a present value today
Cash values may be single amounts, or a series of equal amounts (annuity)
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