279 2000 | = | ( | 321 100 | ( | 1 | + | g | ) | ) | ÷ | 31 10 | + | g |
| 方程右边 = | 321 100 | ( | 1 | + | g | ) | × | 10 31 | + | g |
| = | 321 310 | ( | 1 | + | g | ) | + | g |
| = | 321 310 | × | 1 | + | 321 310 | g | + | g |
| = | 321 310 | + | 321 310 | g | + | g |
| = | 321 310 | + | 631 310 | g |
279 2000 | = | 321 310 | + | 631 310 | g |
| - | 631 310 | g | = | 321 310 | − | 279 2000 |
| - | 631 310 | g | = | 55551 62000 |
| - | 55551 62000 | = | 631 310 | g |
631 310 | g | = | - | 55551 62000 |
| g | = | - | 55551 62000 | ÷ | 631 310 |
| = | - | 55551 62000 | × | 310 631 |
| = | - | 55551 200 | × | 1 631 |
| g | = | - | 55551 126200 |
| g | = | - 0.440182 |