5 4 | ( | 1323 10000 | − | F | ) | = | 87 100 | ( | 967 10000 | − | F | ) |
| 方程左边 = | 5 4 | × | 1323 10000 | − | 5 4 | F |
| = | 1323 8000 | − | 5 4 | F |
1323 8000 | − | 5 4 | F | = | 87 100 | ( | 967 10000 | − | F | ) |
| 方程右边 = | 87 100 | × | 967 10000 | − | 87 100 | F |
| = | 84129 1000000 | − | 87 100 | F |
1323 8000 | − | 5 4 | F | = | 84129 1000000 | − | 87 100 | F |
| - | 5 4 | F | + | 87 100 | F | = | 84129 1000000 | − | 1323 8000 |
| - | 19 50 | F | = | 84129 1000000 | − | 1323 8000 |
| - | 19 50 | F | = | - | 40623 500000 |
40623 500000 | = | 19 50 | F |
19 50 | F | = | 40623 500000 |
| F | = | 40623 500000 | ÷ | 19 50 |
| = | 40623 500000 | × | 50 19 |
| = | 40623 10000 | × | 1 19 |
| F | = | 40623 190000 |
| F | = | 0.213805 |