| ( | X | − | X | ÷ | 113 100 | × | 1 10 | ) | ÷ | 719 100 | = | 719 10000 |
| 方程左边 = | X | × | 100 719 | − | X | ÷ | 113 100 | × | 1 10 | × | 100 719 |
| = | X | × | 100 719 | − | X | × | 1000 81247 |
| = | 10300 81247 | X |
10300 81247 | X | = | 719 10000 |
| X | = | 719 10000 | ÷ | 10300 81247 |
| = | 719 10000 | × | 81247 10300 |
| X | = | 58416593 103000000 |
| X | = | 0.567151 |