| 396 | × | 396 | ( | 1 | + | 1 25 | x | x | ) | = | x | x | x | x | ( | 1 | + | 1 40000 | x | x | ) |
| 方程左边 = | 156816 | ( | 1 | + | 1 25 | x | x | ) |
| 156816 | ( | 1 | + | 1 25 | x | x | ) | = | x | x | x | x | ( | 1 | + | 1 40000 | x | x | ) |
| 方程左边 = | 156816 | × | 1 | + | 156816 | × | 1 25 | x | x |
| = | 156816 | + | 156816 25 | x | x |
| 156816 | + | 156816 25 | x | x | = | x | x | x | x | ( | 1 | + | 1 40000 | x | x | ) |
| 方程右边 = | x | x | x | x | × | 1 | + | x | x | x | x | × | 1 40000 | x | x |
| 156816 | + | 156816 25 | x | x | = | x | x | x | x | × | 1 | + | x | x | x | x | × | 1 40000 | x | x |