Solve for the unknown number of years in each of the following. (Do not round intermediate calculations and round your final answers to 2 decimal places (e.g., 32.16).)
| Present Value ($) | Years | Interest Rate | Future Value ($) |
|---|---|---|---|
| 500 | _____ | 8% | 1,075 |
| 750 | _____ | 12% | 1,836 |
| 17,800 | _____ | 18% | 294,671 |
| 20,900 | _____ | 14% | 320,610 |