| ( | 141 | A | + | 438264 625 | ) | × | 4 | ÷ | ( | 9 10 | × | 14300 | ) | = | A |
| 方程两边同时乘以: | ( | 9 10 | × | 14300 | ) |
| ( | 141 | A | + | 438264 625 | ) | × | 4 | = | A | ( | 9 10 | × | 14300 | ) |
| 141 | A | × | 4 | + | 438264 625 | × | 4 | = | A | ( | 9 10 | × | 14300 | ) |
| 141 | A | × | 4 | + | 438264 625 | × | 4 | = | A | × | 9 10 | × | 14300 |
| 564 | A | + | 1753056 625 | = | A | × | 12870 |
| 564 | A | − | 12870 | A | = | - | 1753056 625 |
| - | 12306 | A | = | - | 1753056 625 |
1753056 625 | = | 12306 | A |
| 12306 | A | = | 1753056 625 |
| A | = | 1753056 625 | ÷ | 12306 |
| = | 1753056 625 | × | 1 12306 |
| = | 292176 625 | × | 1 2051 |
| A | = | 292176 1281875 |
| A | = | 0.227929 |