| ( | 263 100 | x | + | 60 | ) | ( | x | + | 60 | ) | × | 2 5 | × | 7850 | = | 463000000 |
| 方程左边 = | ( | 263 100 | x | + | 60 | ) | ( | x | + | 60 | ) | × | 3140 |
| ( | 263 100 | x | + | 60 | ) | ( | x | + | 60 | ) | × | 3140 | = | 463000000 |
| 方程左边 = | 263 100 | x | ( | x | + | 60 | ) | × | 3140 | + | 60 | ( | x | + | 60 | ) | × | 3140 |
| = | 41291 5 | x | ( | x | + | 60 | ) | + | 188400 | ( | x | + | 60 | ) |
| = | 41291 5 | x | x | + | 41291 5 | x | × | 60 | + | 188400 | ( | x | + | 60 | ) |
| = | 41291 5 | x | x | + | 495492 | x | + | 188400 | ( | x | + | 60 | ) |
| = | 41291 5 | x | x | + | 495492 | x | + | 188400 | x | + | 188400 | × | 60 |
| = | 41291 5 | x | x | + | 495492 | x | + | 188400 | x | + | 11304000 |
| = | 41291 5 | x | x | + | 683892 | x | + | 11304000 |
41291 5 | x | x | + | 683892 | x | + | 11304000 | = | 463000000 |