Assume you are to borrow money, the loan amount, at an annual interest rate to be paid in equal installments each period.

Installment Loan Schedule
Loan Amount		$25,000
Annual Interest Rate		9.90%
Periods per year		12
Years to payback		5
			See Table B.3 in book.
Factor		47.17454194	FACTOR = [1 - (1 / ((1 + R)^n)]/ R
Equal Payments		$529.95	let R = period interest rate
			let n = number of periods to payback loan
	Number of periods:	60
			Reduction
Period	Payment	Interest Exp	in Principal	Principal
Borrowed money				$25,000.00