| ( | 12174197 50 | + | 30000 | + | 60000 | + | 200000 | + | x | + | 25000 | ) | ( | 1 | + | 168 2500 | ) | = | 655800 |
| 方程左边 = | 12174197 50 | ( | 1 | + | 168 2500 | ) | + | 30000 | ( | 1 | + | 168 2500 | ) | + | 60000 | ( | 1 | + | 168 2500 | ) | + | 200000 | ( | 1 | + | 168 2500 | ) | + | x | ( | 1 | + | 168 2500 | ) | + | 25000 | ( | 1 | + | 168 2500 | ) |
| = | 12174197 50 | × | 1 | + | 12174197 50 | × | 168 2500 | + | 30000 | ( | 1 | + | 168 2500 | ) | + | 60000 | ( | 1 | + | 168 2500 | ) | + | 200000 | ( | 1 | + | 168 2500 | ) | + | x | ( | 1 | + | 168 2500 | ) |
| = | 12174197 50 | + | 255658137 15625 | + | 30000 | ( | 1 | + | 168 2500 | ) | + | 60000 | ( | 1 | + | 168 2500 | ) | + | 200000 | ( | 1 | + | 168 2500 | ) | + | x | ( | 1 | + | 168 2500 | ) | + | 25000 | ( | 1 | + | 168 2500 | ) |