112 5 | × | 2200 | x | ( | 1458 | − | x | ÷ | 2 | ) | = | 4079950000 |
| Left side of the equation = | 49280 | x | ( | 1458 | − | x | ÷ | 2 | ) |
| 49280 | x | ( | 1458 | − | x | ÷ | 2 | ) | = | 4079950000 |
| Left side of the equation = | 49280 | x | × | 1458 | − | 49280 | x | x | ÷ | 2 |
| = | 71850240 | x | − | 24640 | x | x |
| 71850240 | x | − | 24640 | x | x | = | 4079950000 |