| ( | 637653 10 | − | X | ) | ÷ | 49050229 100 | = | 0 |
| 方程左边 = | 637653 10 | × | 100 49050229 | − | X | × | 100 49050229 |
| = | 6376530 49050229 | − | X | × | 100 49050229 |
6376530 49050229 | − | 100 49050229 | X | = | 0 |
| - | 100 49050229 | X | = | 0 | − | 6376530 49050229 |
| - | 100 49050229 | X | = | - | 6376530 49050229 |
6376530 49050229 | = | 100 49050229 | X |
100 49050229 | X | = | 6376530 49050229 |
| X | = | 6376530 49050229 | ÷ | 100 49050229 |
| = | 6376530 49050229 | × | 49050229 100 |
| = | 637653 60037 | × | 60037 10 |
| X | = | 38282773161 600370 |