| 0 | = | Q | × | 143 20 | − | ( | Q | × | 287 100 | + | 285873 100 | ) | − | Q | × | 2 25 |
| 方程右边 = | 707 100 | Q | − | ( | Q | × | 287 100 | + | 285873 100 | ) |
| 0 | = | 707 100 | Q | − | ( | Q | × | 287 100 | + | 285873 100 | ) |
| 方程右边 = | 707 100 | Q | − | Q | × | 287 100 | − | 285873 100 |
| = | 21 5 | Q | − | 285873 100 |
| 0 | = | 21 5 | Q | − | 285873 100 |
| - | 21 5 | Q | = | - | 285873 100 | − | 0 |
| - | 21 5 | Q | = | - | 285873 100 |
285873 100 | = | 21 5 | Q |
21 5 | Q | = | 285873 100 |
| Q | = | 285873 100 | ÷ | 21 5 |
| = | 285873 100 | × | 5 21 |
| = | 13613 20 | × | 1 |
| Q | = | 13613 20 |
| Q | = | 680.65 |