| 180000000 | = | 1217370 | x | − | 1309 | x | × | 2 |
| 方程右边 = | 1217370 | x | − | 2618 | x |
| = | 1214752 | x |
| 180000000 | = | 1214752 | x |
| - | 1214752 | x | = | - | 180000000 |
| 180000000 | = | 1214752 | x |
| 1214752 | x | = | 180000000 |
| x | = | 180000000 | ÷ | 1214752 |
| = | 180000000 | × | 1 1214752 |
| = | 5625000 | × | 1 37961 |
| x | = | 5625000 37961 |
| x | = | 148.178394 |