| ( | X | − | 228297 25 | ) | ÷ | 228297 25 | × | 100 | × | 3 2 | = | 21 2 |
| 方程左边 = | ( | X | − | 228297 25 | ) | × | 1250 76099 |
| ( | X | − | 228297 25 | ) | × | 1250 76099 | = | 21 2 |
| 方程左边 = | X | × | 1250 76099 | − | 228297 25 | × | 1250 76099 |
| = | X | × | 1250 76099 | − | 11414850 76099 |
1250 76099 | X | − | 11414850 76099 | = | 21 2 |
1250 76099 | X | = | 21 2 | + | 11414850 76099 |
1250 76099 | X | = | 24427779 152198 |
| X | = | 24427779 152198 | ÷ | 1250 76099 |
| = | 24427779 152198 | × | 76099 1250 |
| X | = | 1858929554121 190247500 |