need help please

What is the discounted value of payments of $83.00 made at the end of each month for 9.25 years if interest is 6% compounded monthly? The discounted value is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) An installment contract for the purchase of a car requires payments of $332.06 at the end of each month for 3.25 years. Interest is 11% per annum compounded monthly. (a) What is the amount financed? (b) How much is the interest cost? (a) The amount financed is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)