| 89 | ÷ | 111 | − | 1 5 | − | 9 | ÷ | 447 10 | = | 57 20000 | ( | 198 | + | X | ) |
| Left side of the equation = | 89 111 | − | 1 5 | − | 30 149 |
| = | 33116 82695 |
33116 82695 | = | 57 20000 | ( | 198 | + | X | ) |
| Right side of the equation = | 57 20000 | × | 198 | + | 57 20000 | X |
| = | 5643 10000 | + | 57 20000 | X |
33116 82695 | = | 5643 10000 | + | 57 20000 | X |
| - | 57 20000 | X | = | 5643 10000 | − | 33116 82695 |
| - | 57 20000 | X | = | 27097577 165390000 |
| - | 27097577 165390000 | = | 57 20000 | X |
57 20000 | X | = | - | 27097577 165390000 |
| X | = | - | 27097577 165390000 | ÷ | 57 20000 |
| = | - | 27097577 165390000 | × | 20000 57 |
| = | - | 27097577 16539 | × | 2 57 |
| X | = | - | 54195154 942723 |
| X | = | - 57.487888 |