HP 10bII+ User Manual page 161

The payment calculation is a straightforward TVM payment calculation using the new amount
as the PV.
Set to End mode. Press
Table 13-25 Calculating the payment
Keys
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Then, to calculate the lender's return, enter cash flows that represent the complete picture of
the wrap-around mortgage from the lender's point of view:
When you group the above cash flows, you'll find that:
CF = 47,510.22 - 82,510.22 = -35,000
0
CF = 861.59 - 754.00 = 107.59
1
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if BEGIN annunciator is displayed.
Figure 22 Cash flow diagram (Wrap-around mortgage)
Display Description
0.00 Clears TVM registers.
12.00 Sets payments per year.
82,510.22 Stores loan amount on which
your new payment is calculated.
9.50 Stores interest rate.
0.00 Stores final balance.
180.00 Stores number of monthly
payments you will make.
-861.59 Calculates your new payment.
Additional Examples 153