HP -18C Owner's Manual page 78

Step 1:
Find the present value of the monthly payments:
47 "
18 _
2400
@J
.. ...
t~=47 . 00
P ; 'tR=18 . 00
PMT=-2,400.00
PV=81,735.58
Stores the number of
payments.
Stores the annual interest
rate.
Stores the monthly
payment.
Calculates the present
(capitalized) value of the
47 monthly payments.
Step 2:
Add the additional advance payment to PY. Store the answer.
G
2400
0
84 .. 135 . 58
I
STO
10
Calculates the present
value of all the
payments.
Stores 84,135.58 in regis-
ter O.
Step 3:
Find the present value of the buy option.
48 "
15000
@J
...
0"
...
t~=48. 00
F\}=-15, 000.00
PMT=0.00
P'.'=7 .. 340.43
Step 4:
Add the results of step 3 and 4.
G I
RCLI 0
0
91 . . 476.00
76 4: Time Value of Money
Stores the number of
periods.
Stores the buy option .
Clears PMT.
Calculates the present
value of the buy option.
Calculates the present
(capitalized) value of the
lease.