| X | = | ( | 159 1000 | × | 7 25 | × | 24 | × | 365 | × | 20 | ) | ÷ | ( | 50 | × | 365 | ) |
| 方程两边同时乘以: | ( | 50 | × | 365 | ) |
| X | ( | 50 | × | 365 | ) | = | ( | 159 1000 | × | 7 25 | × | 24 | × | 365 | × | 20 | ) |
| X | × | 50 | × | 365 | = | ( | 159 1000 | × | 7 25 | × | 24 | × | 365 | × | 20 | ) |
| X | × | 50 | × | 365 | = | 159 1000 | × | 7 25 | × | 24 | × | 365 | × | 20 |
| X | × | 18250 | = | 974988 125 |
| X | = | 974988 125 | ÷ | 18250 |
| = | 974988 125 | × | 1 18250 |
| = | 6678 125 | × | 1 125 |
| X | = | 6678 15625 |
| X | = | 0.427392 |