| 73190000 | = | 112 5 | × | 1000 | x | ( | 2261 20 | − | x | ÷ | 2 | ) |
| Right side of the equation = | 22400 | x | ( | 2261 20 | − | x | ÷ | 2 | ) |
| 73190000 | = | 22400 | x | ( | 2261 20 | − | x | ÷ | 2 | ) |
| Right side of the equation = | 22400 | x | × | 2261 20 | − | 22400 | x | x | ÷ | 2 |
| = | 2532320 | x | − | 11200 | x | x |
| 73190000 | = | 2532320 | x | − | 11200 | x | x |