| 300 | = | 2013 100 | × | 1 250 | × | 13 10 | ( | 2183 400 | − | x | ) |
| 方程右边 = | 26169 250000 | ( | 2183 400 | − | x | ) |
| 300 | = | 26169 250000 | ( | 2183 400 | − | x | ) |
| 方程右边 = | 26169 250000 | × | 2183 400 | − | 26169 250000 | x |
| = | 57126927 100000000 | − | 26169 250000 | x |
| 300 | = | 57126927 100000000 | − | 26169 250000 | x |
26169 250000 | x | = | 57126927 100000000 | − | 300 |