| ( | 6 5 | + | 4 | ) | ÷ | 2 | × | X | × | 36 | = | 500 |
| Left side of the equation = | ( | 6 5 | + | 4 | ) | × | 18 | X |
| ( | 6 5 | + | 4 | ) | × | 18 | X | = | 500 |
| Left side of the equation = | 6 5 | × | 18 | X | + | 4 | × | 18 | X |
| = | 108 5 | X | + | 72 | X |
| = | 468 5 | X |
468 5 | X | = | 500 |
| X | = | 500 | ÷ | 468 5 |
| = | 500 | × | 5 468 |
| = | 125 | × | 5 117 |
| X | = | 625 117 |
| X | = | 5.34188 |