| 2 | × | 118 | ( | 1000 | − | x | ) | = | 3 10 | × | 567 100 | × | 1 100000000 | ( | x | x | x | x | − | 873 | × | 873 | × | 873 | × | 873 | ) |
| 方程左边 = | 236 | ( | 1000 | − | x | ) |
| 236 | ( | 1000 | − | x | ) | = | 3 10 | × | 567 100 | × | 1 100000000 | ( | x | x | x | x | − | 873 | × | 873 | × | 873 | × | 873 | ) |
| 方程左边 = | 236 | × | 1000 | − | 236 | x |
| = | 236000 | − | 236 | x |
| 236000 | − | 236 | x | = | 3 10 | × | 567 100 | × | 1 100000000 | ( | x | x | x | x | − | 873 | × | 873 | × | 873 | × | 873 | ) |