Enter an amount [math]A[/math] and an interest rate [math]r[/math] (as a decimal) to calculate the monthly payments on a 25 year mortgage.[br][br]The amortization table shows annual summaries.[br]The Payment column is the sum of the 12 monthly payments.[br]The Interest column shows the amount of interest paid for an entire year.[br]The Principal column shows the amount of the payments, after interest, that reduce the balance.[br]The Balance column shows the balance outstanding at the end of each year.[br][br]The graph shows balance outstanding at the end of each year.