| 3 | ÷ | 560 | + | 5 | ÷ | 102 | + | 3 | ÷ | 6679 50 | + | X | ÷ | 447 10 | + | ( | 873 10 | − | X | ) | ÷ | 1000 | = | 69 200 |
| 方程左边 = | 3 560 | + | 5 102 | + | 150 6679 | + | X | × | 10 447 | + | ( | 873 10 | − | X | ) | × | 1 1000 |
| = | 14656487 190752240 | + | 10 447 | X | + | ( | 873 10 | − | X | ) | × | 1 1000 |
14656487 190752240 | + | 10 447 | X | + | ( | 873 10 | − | X | ) | × | 1 1000 | = | 69 200 |
| 方程左边 = | 14656487 190752240 | + | 10 447 | X | + | 873 10 | × | 1 1000 | − | X | × | 1 1000 |
| = | 14656487 190752240 | + | 10 447 | X | + | 873 10000 | − | X | × | 1 1000 |