| 1061915 | = | 69 5 | × | 1500 | ( | 902 | − | x | ) |
| 方程右边 = | 20700 | ( | 902 | − | x | ) |
| 1061915 | = | 20700 | ( | 902 | − | x | ) |
| 方程右边 = | 20700 | × | 902 | − | 20700 | x |
| = | 18671400 | − | 20700 | x |
| 1061915 | = | 18671400 | − | 20700 | x |
| 20700 | x | = | 18671400 | − | 1061915 |
| 20700 | x | = | 17609485 |
| x | = | 17609485 | ÷ | 20700 |
| = | 17609485 | × | 1 20700 |
| = | 3521897 | × | 1 4140 |
| x | = | 3521897 4140 |
| x | = | 850.699758 |