| ( | ( | ( | ( | X | − | 560000 | ) | × | 75 100 | ) | × | 8200000 | ) | ÷ | 800000 | ) | ÷ | 75 100 | + | 200000 | = | 0 |
| 方程左边 = | ( | ( | ( | X | − | 560000 | ) | × | 75 100 | ) | × | 8200000 | ) | ÷ | 800000 | × | 100 75 | + | 200000 |
| = | ( | ( | ( | X | − | 560000 | ) | × | 75 100 | ) | × | 8200000 | ) | × | 1 600000 | + | 200000 |
| = | ( | ( | X | − | 560000 | ) | × | 75 100 | ) | × | 8200000 | × | 1 600000 | + | 200000 |
| = | ( | ( | X | − | 560000 | ) | × | 75 100 | ) | × | 41 3 | + | 200000 |
| = | ( | X | − | 560000 | ) | × | 75 100 | × | 41 3 | + | 200000 |
| = | ( | X | − | 560000 | ) | × | 41 4 | + | 200000 |
| = | X | × | 41 4 | − | 560000 | × | 41 4 | + | 200000 |
| = | X | × | 41 4 | − | 5740000 | + | 200000 |
| = | 41 4 | X | − | 5540000 |
41 4 | X | − | 5540000 | = | 0 |
41 4 | X | = | 0 | + | 5540000 |
41 4 | X | = | 5540000 |
| X | = | 5540000 | ÷ | 41 4 |
| = | 5540000 | × | 4 41 |
| X | = | 22160000 41 |
| X | = | 540487.804878 |