| 20 | ÷ | 6679 50 | + | X | ÷ | 1000 | = | 11 6250 | ( | 253 5 | + | X | ) |
| Left side of the equation = | 1000 6679 | + | X | × | 1 1000 |
1000 6679 | + | 1 1000 | X | = | 11 6250 | ( | 253 5 | + | X | ) |
| Right side of the equation = | 11 6250 | × | 253 5 | + | 11 6250 | X |
| = | 2783 31250 | + | 11 6250 | X |
1000 6679 | + | 1 1000 | X | = | 2783 31250 | + | 11 6250 | X |
1 1000 | X | − | 11 6250 | X | = | 2783 31250 | − | 1000 6679 |
| - | 19 25000 | X | = | 2783 31250 | − | 1000 6679 |
| - | 19 25000 | X | = | - | 12662343 208718750 |
12662343 208718750 | = | 19 25000 | X |
19 25000 | X | = | 12662343 208718750 |
| X | = | 12662343 208718750 | ÷ | 19 25000 |
| = | 12662343 208718750 | × | 25000 19 |
| = | 12662343 33395 | × | 4 19 |
| X | = | 50649372 634505 |
| X | = | 79.825016 |