| 3 | ÷ | 560 | + | 3 | ÷ | 447 10 | + | 20 | ÷ | 6679 50 | + | X | ÷ | 1000 | + | ( | 219 5 | − | X | ) | ÷ | 255 2 | = | 63 250 |
| 方程左边 = | 3 560 | + | 10 149 | + | 1000 6679 | + | X | × | 1 1000 | + | ( | 219 5 | − | X | ) | × | 2 255 |
| = | 123827913 557295760 | + | 1 1000 | X | + | ( | 219 5 | − | X | ) | × | 2 255 |
123827913 557295760 | + | 1 1000 | X | + | ( | 219 5 | − | X | ) | × | 2 255 | = | 63 250 |
| 方程左边 = | 123827913 557295760 | + | 1 1000 | X | + | 219 5 | × | 2 255 | − | X | × | 2 255 |
| = | 123827913 557295760 | + | 1 1000 | X | + | 146 425 | − | X | × | 2 255 |