| 260 | × | 1000000 | = | 143 10 | × | 250 | x | ( | 560 | − | x | ÷ | 2 | ) |
| Left side of the equation = | 260000000 |
| 260000000 | = | 143 10 | × | 250 | x | ( | 560 | − | x | ÷ | 2 | ) |
| Right side of the equation = | 3575 | x | ( | 560 | − | x | ÷ | 2 | ) |
| 260000000 | = | 3575 | x | ( | 560 | − | x | ÷ | 2 | ) |
| Right side of the equation = | 3575 | x | × | 560 | − | 3575 | x | x | ÷ | 2 |
| = | 2002000 | x | − | 3575 2 | x | x |
| 260000000 | = | 2002000 | x | − | 3575 2 | x | x |