| 147 | × | 147 | ÷ | 101 | ÷ | 101 | × | ( | 1 | − | x | x | ) | = | 15707963 5000000 | x | × | 15707963 5000000 | x |
| 方程左边 = | 21609 10201 | ( | 1 | − | x | x | ) |
21609 10201 | ( | 1 | − | x | x | ) | = | 15707963 5000000 | x | × | 15707963 5000000 | x |
| 方程左边 = | 21609 10201 | × | 1 | − | 21609 10201 | x | x |
| = | 21609 10201 | − | 21609 10201 | x | x |
21609 10201 | − | 21609 10201 | x | x | = | 15707963 5000000 | x | × | 15707963 5000000 | x |