| ( | ( | 1007732 25 | + | a | + | 10000 | ) | − | 25000 | ) | × | 3 100 | = | 11366 25 | + | a |
| 方程左边 = | ( | 1007732 25 | + | a | + | 10000 | ) | × | 3 100 | − | 25000 | × | 3 100 |
| = | ( | 1007732 25 | + | a | + | 10000 | ) | × | 3 100 | − | 750 |
| = | 1007732 25 | × | 3 100 | + | a | × | 3 100 | + | 10000 | × | 3 100 | − | 750 |
| = | 755799 625 | + | a | × | 3 100 | + | 300 | − | 750 |
| = | 474549 625 | + | 3 100 | a |
474549 625 | + | 3 100 | a | = | 11366 25 | + | a |
3 100 | a | − | a | = | 11366 25 | − | 474549 625 |
| - | 97 100 | a | = | 11366 25 | − | 474549 625 |
| - | 97 100 | a | = | - | 190399 625 |
190399 625 | = | 97 100 | a |
97 100 | a | = | 190399 625 |
| a | = | 190399 625 | ÷ | 97 100 |
| = | 190399 625 | × | 100 97 |
| = | 190399 25 | × | 4 97 |
| a | = | 761596 2425 |
| a | = | 314.060206 |