An installment contract for the purchase of a car requires payments of ​$250.37 at the end of each month for 3.75 years. Interest is 12% 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.)
​(b) The interest is $
​(Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as​ needed.)