| 3997116 | = | X | − | X | × | 12 100 | ÷ | 21 20 | × | 1 20 |
| Right side of the equation = | X | − | X | × | 1 175 |
| = | 174 175 | X |
| 3997116 | = | 174 175 | X |
| - | 174 175 | X | = | - | 3997116 |
| 3997116 | = | 174 175 | X |
174 175 | X | = | 3997116 |
| X | = | 3997116 | ÷ | 174 175 |
| = | 3997116 | × | 175 174 |
| = | 666186 | × | 175 29 |
| X | = | 116582550 29 |
| X | = | 4020087.931034 |