| 0 | = | 50 | Q | − | ( | ( | 50 | × | 11 2000 | + | 50 | × | 1 20 | ) | Q | + | 1000000 | ) |
| 方程右边 = | 50 | Q | − | ( | 50 | × | 11 2000 | + | 50 | × | 1 20 | ) | Q | − | 1000000 |
| = | 50 | Q | − | 50 | × | 11 2000 | Q | − | 50 | × | 1 20 | Q | − | 1000000 |
| = | 50 | Q | − | 11 40 | Q | − | 5 2 | Q | − | 1000000 |
| = | 1889 40 | Q | − | 1000000 |
| 0 | = | 1889 40 | Q | − | 1000000 |
| - | 1889 40 | Q | = | - | 1000000 | − | 0 |
| - | 1889 40 | Q | = | - | 1000000 |
| 1000000 | = | 1889 40 | Q |
1889 40 | Q | = | 1000000 |
| Q | = | 1000000 | ÷ | 1889 40 |
| = | 1000000 | × | 40 1889 |
| Q | = | 40000000 1889 |
| Q | = | 21175.224987 |