11 25 | × | 7536 | × | 7536 | a | × | 3 | − | 7536 | a | + | 1000000 | = | 0 |
| 方程左边 = | 1874112768 25 | a | − | 7536 | a | + | 1000000 |
| = | 1873924368 25 | a | + | 1000000 |
1873924368 25 | a | + | 1000000 | = | 0 |
1873924368 25 | a | = | 0 | − | 1000000 |
1873924368 25 | a | = | - | 1000000 |
| a | = | - | 1000000 | ÷ | 1873924368 25 |
| = | - | 1000000 | × | 25 1873924368 |
| = | - | 62500 | × | 25 117120273 |
| a | = | - | 1562500 117120273 |
| a | = | - 0.013341 |