| 238600000 | = | x | × | 79520 | × | 364 | + | 1 2 | ( | 7008 | × | 215 | − | x | × | 79520 | ) | × | 238 |
| 方程右边 = | x | × | 28945280 | + | 119 | ( | 7008 | × | 215 | − | x | × | 79520 | ) |
| 238600000 | = | 28945280 | x | + | 119 | ( | 7008 | × | 215 | − | x | × | 79520 | ) |
| 方程右边 = | 28945280 | x | + | 119 | × | 7008 | × | 215 | − | 119 | x | × | 79520 |
| = | 28945280 | x | + | 179299680 | − | 9462880 | x |
| = | 19482400 | x | + | 179299680 |
| 238600000 | = | 19482400 | x | + | 179299680 |
| - | 19482400 | x | = | 179299680 | − | 238600000 |
| - | 19482400 | x | = | - | 59300320 |
| 59300320 | = | 19482400 | x |
| 19482400 | x | = | 59300320 |
| x | = | 59300320 | ÷ | 19482400 |
| = | 59300320 | × | 1 19482400 |
| = | 370627 | × | 1 121765 |
| x | = | 370627 121765 |
| x | = | 3.043789 |