|
|
|
Appendix G: HP-80 Calculation Formulas
|
|
|
If n > 182.5
|
|
 
|
|
|
|
|
where j = 1 – fractional part of
|
n
|
|
|
|
|
182.5
|
|
|
|
(fractional part means that part to the right of the decimal point)
|
|
Accumulated Interest
|
|
Interest paid between payment j to payment k
|
|
|
|
Remaining balance to be paid at payment k (k = 1, 2, 3, ... )
|
|
|
|
Rebate (Rule of 78’s)
|
|
|
PV = finance charge
|
|
|
|
|
Ik = interest charged at month k
|
|
|
|
Sum of Digits Depreciation
|
|
|
Dk = depreciation at k (k = 1, 2, 3, ...)
|
|
|
|
|
BVk = book value at k
|
|
|
|
Percentage
|
|
|
|
|
|
