| ( | s | × | 125000 | − | 347 20 | × | 125000 | − | 485000 | ) | ( | 1 | − | 21 100 | ) | + | 910000 | ÷ | 5 | × | 21 100 | = | 1263363963 5000 |
| 方程左边 = | ( | s | × | 125000 | − | 347 20 | × | 125000 | − | 485000 | ) | ( | 1 | − | 21 100 | ) | + | 38220 |
| ( | s | × | 125000 | − | 347 20 | × | 125000 | − | 485000 | ) | ( | 1 | − | 21 100 | ) | + | 38220 | = | 1263363963 5000 |
| 方程左边 = | s | × | 125000 | ( | 1 | − | 21 100 | ) | − | 347 20 | × | 125000 | ( | 1 | − | 21 100 | ) | − | 485000 | ( | 1 | − | 21 100 | ) | + | 38220 |
| = | s | × | 125000 | ( | 1 | − | 21 100 | ) | − | 2168750 | ( | 1 | − | 21 100 | ) | − | 485000 | ( | 1 | − | 21 100 | ) | + | 38220 |
| = | s | × | 125000 | × | 1 | − | s | × | 125000 | × | 21 100 | − | 2168750 | ( | 1 | − | 21 100 | ) | − | 485000 | ( | 1 | − | 21 100 | ) | + | 38220 |
| = | s | × | 125000 | − | s | × | 26250 | − | 2168750 | ( | 1 | − | 21 100 | ) | − | 485000 | ( | 1 | − | 21 100 | ) | + | 38220 |
| = | 98750 | s | − | 2168750 | ( | 1 | − | 21 100 | ) | − | 485000 | ( | 1 | − | 21 100 | ) | + | 38220 |
| = | 98750 | s | − | 2168750 | × | 1 | + | 2168750 | × | 21 100 | − | 485000 | ( | 1 | − | 21 100 | ) | + | 38220 |
| = | 98750 | s | − | 2168750 | + | 910875 2 | − | 485000 | ( | 1 | − | 21 100 | ) | + | 38220 |
| = | 98750 | s | − | 3350185 2 | − | 485000 | ( | 1 | − | 21 100 | ) |
| = | 98750 | s | − | 3350185 2 | − | 485000 | × | 1 | + | 485000 | × | 21 100 |
| = | 98750 | s | − | 3350185 2 | − | 485000 | + | 101850 |
| = | 98750 | s | − | 4116485 2 |
| 98750 | s | − | 4116485 2 | = | 1263363963 5000 |
| 98750 | s | = | 1263363963 5000 | + | 4116485 2 |