| X | ÷ | 87 | − | 40 | ÷ | 1333 | − | 40 | ÷ | 1650 | = | 19 10000 | ( | X | + | 80 | ) |
| Left side of the equation = | X | × | 1 87 | − | 40 1333 | − | 4 165 |
| = | 1 87 | X | − | 11932 219945 |
1 87 | X | − | 11932 219945 | = | 19 10000 | ( | X | + | 80 | ) |
| Right side of the equation = | 19 10000 | X | + | 19 10000 | × | 80 |
| = | 19 10000 | X | + | 19 125 |
1 87 | X | − | 11932 219945 | = | 19 10000 | X | + | 19 125 |
1 87 | X | − | 19 10000 | X | = | 19 125 | + | 11932 219945 |
8347 870000 | X | = | 19 125 | + | 11932 219945 |
8347 870000 | X | = | 1134091 5498625 |
| X | = | 1134091 5498625 | ÷ | 8347 870000 |
| = | 1134091 5498625 | × | 870000 8347 |
| = | 1134091 14663 | × | 2320 8347 |
| X | = | 2631091120 122392061 |
| X | = | 21.497237 |