| 11105859 | ÷ | 2 | × | x | x | − | 800 | ( | 1 | + | x | ) | − | 40 | × | 36 25 | = | 0 |
| Left side of the equation = | 11105859 2 | x | x | − | 800 | ( | 1 | + | x | ) | − | 288 5 |
11105859 2 | x | x | − | 800 | ( | 1 | + | x | ) | − | 288 5 | = | 0 |
| Left side of the equation = | 11105859 2 | x | x | − | 800 | × | 1 | − | 800 | x | − | 288 5 |
| = | 11105859 2 | x | x | − | 800 | − | 800 | x | − | 288 5 |
| = | 11105859 2 | x | x | − | 4288 5 | − | 800 | x |
11105859 2 | x | x | − | 4288 5 | − | 800 | x | = | 0 |