| 10 | ÷ | 102 | + | 6 | ÷ | 447 10 | + | 8 | ÷ | 451 10 | + | ( | 311 5 | − | X | ) | ÷ | 255 2 | + | X | ÷ | 1000 | = | 61 100 |
| 方程左边 = | 5 51 | + | 20 149 | + | 80 451 | + | ( | 311 5 | − | X | ) | × | 2 255 | + | X | × | 1 1000 |
| = | 1403935 3427149 | + | ( | 311 5 | − | X | ) | × | 2 255 | + | 1 1000 | X |
1403935 3427149 | + | ( | 311 5 | − | X | ) | × | 2 255 | + | 1 1000 | X | = | 61 100 |
| 方程左边 = | 1403935 3427149 | + | 311 5 | × | 2 255 | − | X | × | 2 255 | + | 1 1000 | X |
| = | 1403935 3427149 | + | 622 1275 | − | X | × | 2 255 | + | 1 1000 | X |
| = | 25632051 28559575 | − | 349 51000 | X |
25632051 28559575 | − | 349 51000 | X | = | 61 100 |
| - | 349 51000 | X | = | 61 100 | − | 25632051 28559575 |
| - | 349 51000 | X | = | - | 32842841 114238300 |
32842841 114238300 | = | 349 51000 | X |
349 51000 | X | = | 32842841 114238300 |
| X | = | 32842841 114238300 | ÷ | 349 51000 |
| = | 32842841 114238300 | × | 51000 349 |
| = | 32842841 67199 | × | 30 349 |
| X | = | 985285230 23452451 |
| X | = | 42.012037 |