Problem 5-5 Calculating the Number of Period: L04) Solve for the unknown number of years in each of the following (Do not found intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.). Years Future Value Present Value $ 570 820 18,500 21,600 Interest Rate 8% 12 18 14 $ 1,293 2,173 343,880 363,176