| ( | x | − | 119713 1000 | ) | × | 10 | − | 1 | − | 1 | = | 3 |
| 方程左边 = | ( | x | − | 119713 1000 | ) | × | 10 | − | 2 |
| ( | x | − | 119713 1000 | ) | × | 10 | − | 2 | = | 3 |
| 方程左边 = | x | × | 10 | − | 119713 1000 | × | 10 | − | 2 |
| = | x | × | 10 | − | 119713 100 | − | 2 |
| = | 10 | x | − | 119913 100 |
| 10 | x | − | 119913 100 | = | 3 |
| 10 | x | = | 3 | + | 119913 100 |
| 10 | x | = | 120213 100 |
| x | = | 120213 100 | ÷ | 10 |
| = | 120213 100 | × | 1 10 |
| x | = | 120213 1000 |
| x | = | 120.213 |