| 240 | × | 10000000 | = | 69 5 | × | 300 | × | 640 | x | ( | 590 | − | x | ) |
| Left side of the equation = | 2400000000 |
| 2400000000 | = | 69 5 | × | 300 | × | 640 | x | ( | 590 | − | x | ) |
| Right side of the equation = | 2649600 | x | ( | 590 | − | x | ) |
| 2400000000 | = | 2649600 | x | ( | 590 | − | x | ) |
| Right side of the equation = | 2649600 | x | × | 590 | − | 2649600 | x | x |
| = | 1563264000 | x | − | 2649600 | x | x |
| 2400000000 | = | 1563264000 | x | − | 2649600 | x | x |