| 10 | ÷ | 4457 50 | + | 5 | ÷ | 50 | + | 8 | ÷ | 447 10 | + | 20 | ÷ | 200 | + | 30 | ÷ | 1000 | + | x | ÷ | 1650 | = | 297 50 |
| 方程左边 = | 500 4457 | + | 1 10 | + | 80 447 | + | 1 10 | + | 3 100 | + | x | × | 1 1650 |
| = | 103828417 199227900 | + | 1 1650 | x |
103828417 199227900 | + | 1 1650 | x | = | 297 50 |
1 1650 | x | = | 297 50 | − | 103828417 199227900 |