69 5 | × | 1580 | x | ( | 1357 | − | x | ÷ | 2 | ) | − | 2256000000 | = | 0 |
| Left side of the equation = | 21804 | x | ( | 1357 | − | x | ÷ | 2 | ) | − | 2256000000 |
| 21804 | x | ( | 1357 | − | x | ÷ | 2 | ) | − | 2256000000 | = | 0 |
| Left side of the equation = | 21804 | x | × | 1357 | − | 21804 | x | x | ÷ | 2 | − | 2256000000 |
| = | 29588028 | x | − | 10902 | x | x | − | 2256000000 |
| 29588028 | x | − | 10902 | x | x | − | 2256000000 | = | 0 |