Exercise - 01/23/2017 1. Simple Interest Calculator Read in values of principal, number of years and rate of interest and calculate the simple interest using the fomula Interest = (Principal * NumYears * Rate) / 100. Then add the interest to the principal to calculate the total amount owed. Sample Output: Enter the Principal Amount: 4000 Enter the Number of Years: 3 Enter the Rate of Interest: 6.5 The interest is 780 The total amount owed is 4780