Solve for the unknown number of years in each of the following: (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

Present Value Years Interest Rate Future Value $ $ 195 8 % $ 873 $ 2,105 11 $ 3,500 $ 47,800 10 $ 326,500 213,380 $ 38,650 15 $