| 89 | ÷ | 111 | − | 9 | ÷ | 447 10 | − | 1 5 | = | 71 50000 | ( | 198 | + | X | ) |
| Left side of the equation = | 89 111 | − | 30 149 | − | 1 5 |
| = | 33116 82695 |
33116 82695 | = | 71 50000 | ( | 198 | + | X | ) |
| Right side of the equation = | 71 50000 | × | 198 | + | 71 50000 | X |
| = | 7029 25000 | + | 71 50000 | X |
33116 82695 | = | 7029 25000 | + | 71 50000 | X |
| - | 71 50000 | X | = | 7029 25000 | − | 33116 82695 |
| - | 71 50000 | X | = | - | 49327369 413475000 |
49327369 413475000 | = | 71 50000 | X |
71 50000 | X | = | 49327369 413475000 |
| X | = | 49327369 413475000 | ÷ | 71 50000 |
| = | 49327369 413475000 | × | 50000 71 |
| = | 49327369 16539 | × | 2 71 |
| X | = | 98654738 1174269 |
| X | = | 84.013746 |