Need the answer as well as the excel formula !!

4 Assume that you contribute $330 per month to a retirement plan for 15 years. Then you are able to increase the contribution to $530 per month for the next 25 years. Given an 8 percent interest rate. What is the value of your retirement plan after the 40 years? (Do not round intermediate calculations and round your final answer to 2 decimal places.) 5 6 7 $ 8 9 Initial monthly contribution Number of years Subsequent monthly contribution Number of years Interest rate earned $ 330 15 530 25 8.00% 10 11 12 13 14 Complete the following analysis. Do not hard code values in your calculations. 15 16 17 Value at end of first set of contributions Value at end of second set of contributions 18 19 20 21 22 1 Sheet1