| 209000 | = | 69 5 | × | 1000000 | × | 1 5 | x | ( | 41 100 | − | x | ÷ | 2 | ) | + | 330 | × | 463 2 | × | 37 100 |
| Right side of the equation = | 2760000 | x | ( | 41 100 | − | x | ÷ | 2 | ) | + | 565323 20 |
| 209000 | = | 2760000 | x | ( | 41 100 | − | x | ÷ | 2 | ) | + | 565323 20 |
| Right side of the equation = | 2760000 | x | × | 41 100 | − | 2760000 | x | x | ÷ | 2 | + | 565323 20 |
| = | 1131600 | x | − | 1380000 | x | x | + | 565323 20 |
| 209000 | = | 1131600 | x | − | 1380000 | x | x | + | 565323 20 |