| ( | X | + | 9 10 | ) | × | 11 5 | ÷ | 2 | × | 36 | = | 500 |
| Left side of the equation = | ( | X | + | 9 10 | ) | × | 198 5 |
| ( | X | + | 9 10 | ) | × | 198 5 | = | 500 |
| Left side of the equation = | X | × | 198 5 | + | 9 10 | × | 198 5 |
| = | X | × | 198 5 | + | 891 25 |
198 5 | X | + | 891 25 | = | 500 |
198 5 | X | = | 500 | − | 891 25 |
198 5 | X | = | 11609 25 |
| X | = | 11609 25 | ÷ | 198 5 |
| = | 11609 25 | × | 5 198 |
| = | 11609 5 | × | 1 198 |
| X | = | 11609 990 |
| X | = | 11.726263 |