| ( | X | − | 330337 100 | ) | ÷ | X | = | 7 5000 |
| 方程两边同时乘以: | X |
| ( | X | − | 330337 100 | ) | = | 7 5000 | X |
| X | − | 330337 100 | = | 7 5000 | X |
| X | − | 7 5000 | X | = | 330337 100 |
4993 5000 | X | = | 330337 100 |
| X | = | 330337 100 | ÷ | 4993 5000 |
| = | 330337 100 | × | 5000 4993 |
| = | 330337 | × | 50 4993 |
| X | = | 16516850 4993 |
| X | = | 3308.001202 |