| ( | 8200 | + | 95 | + | X | ) | × | 16 500 | = | 4 | X |
| Left side of the equation = | 8200 | × | 16 500 | + | 95 | × | 16 500 | + | X | × | 16 500 |
| = | 1312 5 | + | 76 25 | + | X | × | 16 500 |
| = | 6636 25 | + | 16 500 | X |
6636 25 | + | 16 500 | X | = | 4 | X |
16 500 | X | − | 4 | X | = | - | 6636 25 |
| - | 496 125 | X | = | - | 6636 25 |
6636 25 | = | 496 125 | X |
496 125 | X | = | 6636 25 |
| X | = | 6636 25 | ÷ | 496 125 |
| = | 6636 25 | × | 125 496 |
| = | 1659 | × | 5 124 |
| X | = | 8295 124 |
| X | = | 66.895161 |