| ( | 5641 10 | − | y | ) | ÷ | y | = | 37 500 |
| 方程两边同时乘以: | y |
| ( | 5641 10 | − | y | ) | = | 37 500 | y |
5641 10 | − | y | = | 37 500 | y |
| - | y | − | 37 500 | y | = | - | 5641 10 |
| - | 537 500 | y | = | - | 5641 10 |
5641 10 | = | 537 500 | y |
537 500 | y | = | 5641 10 |
| y | = | 5641 10 | ÷ | 537 500 |
| = | 5641 10 | × | 500 537 |
| = | 5641 | × | 50 537 |
| y | = | 282050 537 |
| y | = | 525.232775 |