| 2000 | × | 50000 | = | X | ( | 1000 | + | 150 | ) | × | 50000 |
| 方程左边 = | 100000000 |
| 100000000 | = | X | ( | 1000 | + | 150 | ) | × | 50000 |
| 方程右边 = | X | × | 1000 | × | 50000 | + | X | × | 150 | × | 50000 |
| = | X | × | 50000000 | + | X | × | 7500000 |
| = | 57500000 | X |
| 100000000 | = | 57500000 | X |
| - | 57500000 | X | = | - | 100000000 |
| 100000000 | = | 57500000 | X |
| 57500000 | X | = | 100000000 |
| X | = | 100000000 | ÷ | 57500000 |
| = | 100000000 | × | 1 57500000 |
| = | 40 | × | 1 23 |
| X | = | 40 23 |
| X | = | 1.73913 |