| 1600 | = | w | w | ( | 1 25 | w | w | + | 1 | ) | ( | 1 16 | × | 1 16 | w | w | + | 1 | ) |
| 方程右边 = | w | w | × | 1 25 | w | w | ( | 1 16 | × | 1 16 | w | w | + | 1 | ) | + | w | w | × | 1 | ( | 1 16 | × | 1 16 | w | w | + | 1 | ) |
| = | w | w | × | 1 25 | w | w | × | 1 16 | × | 1 16 | w | w | + | w | w | × | 1 25 |
| = | w | w | × | 1 6400 | w | w | w | w | + | w | w | × | 1 25 | w | w |
| = | w | w | × | 1 6400 | w | w | w | w | + | w | w | × | 1 25 | w | w |
| = | w | w | × | 1 6400 | w | w | w | w | + | w | w | × | 1 25 | w | w |
| 1600 | = | w | w | × | 1 6400 | w | w | w | w | + | w | w | × | 1 25 | w | w |