| ( | 77270 | ) | × | 54 5 | ÷ | 114 5 | × | 9 10 | = | 19737 | + | 9 | X |
| 方程左边 = | ( | 77270 | ) | × | 81 190 |
| ( | 77270 | ) | × | 81 190 | = | 19737 | + | 9 | X |
| 方程左边 = | 77270 | × | 81 190 |
| = | 625887 19 |
625887 19 | = | 19737 | + | 9 | X |
| - | 9 | X | = | 19737 | − | 625887 19 |
| - | 9 | X | = | - | 250884 19 |
250884 19 | = | 9 | X |
| 9 | X | = | 250884 19 |
| X | = | 250884 19 | ÷ | 9 |
| = | 250884 19 | × | 1 9 |
| = | 27876 19 | × | 1 |
| X | = | 27876 19 |
| X | = | 1467.157895 |