| X | = | ( | 20312 | + | X | ) | × | 63 1250 | × | 1 2 | × | 3 4 |
| 方程右边 = | ( | 20312 | + | X | ) | × | 189 10000 |
| X | = | ( | 20312 | + | X | ) | × | 189 10000 |
| 方程右边 = | 20312 | × | 189 10000 | + | X | × | 189 10000 |
| = | 479871 1250 | + | X | × | 189 10000 |
| X | = | 479871 1250 | + | 189 10000 | X |
| X | − | 189 10000 | X | = | 479871 1250 |
9811 10000 | X | = | 479871 1250 |
| X | = | 479871 1250 | ÷ | 9811 10000 |
| = | 479871 1250 | × | 10000 9811 |
| = | 479871 | × | 8 9811 |
| X | = | 3838968 9811 |
| X | = | 391.292223 |