9 100 | − | 8 100 | ÷ | 9 100 | − | i | = | 14011 2500 | − | 4661 1000 | ÷ | 14011 2500 | − | i |
| 方程左边 = | 9 100 | − | 8 9 | − | i |
| = | - | 719 900 | − | i |
| - | 719 900 | − | i | = | 14011 2500 | − | 4661 1000 | ÷ | 14011 2500 | − | i |
| 方程右边 = | 14011 2500 | − | 23305 28022 | − | i |
| = | 167176871 35027500 | − | i |
| - | 719 900 | − | i | = | 167176871 35027500 | − | i |
| - | i | + | i | = | 167176871 35027500 | + | 719 900 |
| - | 0 | i | = | 167176871 35027500 | + | 719 900 |