The program must get the following information and then execute a formula to give an answer

The amount of money borrowed

The number of years for which the money was borrowed

The annual percentage rate for the loan

This is what I have so far, although I'm not sure if I'm doing it right (newbie). So i've got it printing the data and asking for inputs, but then I'm not sure how to go about executing the data to give out a number.

# Get information from user print 'CALCULATOR FOR MORTGAGE LOANS' loan_str = raw_input ("Amount of loan:") loan = eval(loan_str) years_str = raw_input("Number of years:") years = eval(years_str) rate_str = raw_input ("Annual percentage rate:") rate = eval(rate_str)

Formula is

here is an example program:

Help is appreciated!