| 0 | = | Q | × | 40000 | − | 2000000 | − | 20000000 | − | 200000 |
| Right side of the equation = | 40000 | Q | − | 22200000 |
| 0 | = | 40000 | Q | − | 22200000 |
| - | 40000 | Q | = | - | 22200000 | − | 0 |
| - | 40000 | Q | = | - | 22200000 |
| 22200000 | = | 40000 | Q |
| 40000 | Q | = | 22200000 |
| Q | = | 22200000 | ÷ | 40000 |
| = | 22200000 | × | 1 40000 |
| = | 555 | × | 1 |
| Q | = | 555 |