| ( | 120000 | + | 3499727 100 | + | X | ) | × | 11 10 | × | 11 1250 | = | X |
| 方程左边 = | ( | 120000 | + | 3499727 100 | + | X | ) | × | 121 12500 |
| ( | 120000 | + | 3499727 100 | + | X | ) | × | 121 12500 | = | X |
| 方程左边 = | 120000 | × | 121 12500 | + | 3499727 100 | × | 121 12500 | + | X | × | 121 12500 |
| = | 5808 5 | + | 423466967 1250000 | + | X | × | 121 12500 |
| = | 1875466967 1250000 | + | 121 12500 | X |
1875466967 1250000 | + | 121 12500 | X | = | X |
121 12500 | X | − | X | = | - | 1875466967 1250000 |
| - | 12379 12500 | X | = | - | 1875466967 1250000 |
1875466967 1250000 | = | 12379 12500 | X |
12379 12500 | X | = | 1875466967 1250000 |
| X | = | 1875466967 1250000 | ÷ | 12379 12500 |
| = | 1875466967 1250000 | × | 12500 12379 |
| = | 1875466967 100 | × | 1 12379 |
| X | = | 1875466967 1237900 |
| X | = | 1515.039153 |