| ( | 1 | + | p | ) | ÷ | ( | 1 | − | p | ) | = | 18400 |
| 方程两边同时乘以: | ( | 1 | − | p | ) |
| ( | 1 | + | p | ) | = | 18400 | ( | 1 | − | p | ) |
| 1 | + | p | = | 18400 | ( | 1 | − | p | ) |
| 1 | + | p | = | 18400 | × | 1 | − | 18400 | p |
| 1 | + | p | = | 18400 | − | 18400 | p |
| p | + | 18400 | p | = | 18400 | − | 1 |
| 18401 | p | = | 18400 | − | 1 |
| 18401 | p | = | 18399 |
| p | = | 18399 | ÷ | 18401 |
| = | 18399 | × | 1 18401 |
| p | = | 18399 18401 |
| p | = | 0.999891 |