| 16 | × | 8 | a | + | ( | 300 | − | 20 | − | 8 | a | ) | ( | 16 | ( | 1 | − | a% | ) | ) | = | 4160 |
| 方程左边 = | 128 | a | + | ( | 300 | − | 20 | − | 8 | a | ) | ( | 16 | ( | 1 | − | a% | ) | ) |
| 128 | a | + | ( | 300 | − | 20 | − | 8 | a | ) | ( | 16 | ( | 1 | − | a% | ) | ) | = | 4160 |
| 方程左边 = | 128 | a | + | 300 | ( | 16 | ( | 1 | − | a% | ) | ) | − | 20 | ( | 16 | ( | 1 | − | a% | ) | ) | − | 8 | a | ( | 16 | ( | 1 | − | a% | ) | ) |
| = | 128 | a | + | 300 | × | 16 | ( | 1 | − | a% | ) | − | 20 | ( | 16 | ( | 1 | − | a% | ) | ) | − | 8 | a | ( | 16 | ( | 1 | − | a% | ) | ) |
| = | 128 | a | + | 4800 | ( | 1 | − | a% | ) | − | 20 | ( | 16 | ( | 1 | − | a% | ) | ) | − | 8 | a | ( | 16 | ( | 1 | − | a% | ) | ) |
| = | 128 | a | + | 4800 | × | 1 | − | 4800 | × | a% | − | 20 | ( | 16 | ( | 1 | − | a% | ) | ) | − | 8 | a | ( | 16 | ( | 1 | − | a% | ) | ) |
| = | 128 | a | + | 4800 | − | 48 | a | − | 20 | ( | 16 | ( | 1 | − | a% | ) | ) | − | 8 | a | ( | 16 | ( | 1 | − | a% | ) | ) |
| = | 80 | a | + | 4800 | − | 20 | ( | 16 | ( | 1 | − | a% | ) | ) | − | 8 | a | ( | 16 | ( | 1 | − | a% | ) | ) |
| = | 80 | a | + | 4800 | − | 20 | × | 16 | ( | 1 | − | a% | ) | − | 8 | a | ( | 16 | ( | 1 | − | a% | ) | ) |
| = | 80 | a | + | 4800 | − | 320 | ( | 1 | − | a% | ) | − | 8 | a | ( | 16 | ( | 1 | − | a% | ) | ) |
| = | 80 | a | + | 4800 | − | 320 | × | 1 | + | 320 | × | a% | − | 8 | a | ( | 16 | ( | 1 | − | a% | ) | ) |
| = | 80 | a | + | 4800 | − | 320 | + | 16 5 | a | − | 8 | a | ( | 16 | ( | 1 | − | a% | ) | ) |
| = | 416 5 | a | + | 4480 | − | 8 | a | ( | 16 | ( | 1 | − | a% | ) | ) |
| = | 416 5 | a | + | 4480 | − | 8 | a | × | 16 | ( | 1 | − | a% | ) |
| = | 416 5 | a | + | 4480 | − | 128 | a | ( | 1 | − | a% | ) |
| = | 416 5 | a | + | 4480 | − | 128 | a | × | 1 | + | 128 | a | × | a% |
| = | 416 5 | a | + | 4480 | − | 128 | a | + | 32 25 | a | a |
| = | - | 224 5 | a | + | 4480 | + | 32 25 | a | a |
| - | 224 5 | a | + | 4480 | + | 32 25 | a | a | = | 4160 |