| A | × | 15000 | = | 840000 | + | 32193 5 | + | 200 | + | 200 | + | ( | 200 | + | 100 | + | 15000 | A | × | 13 10000 | ) | + | ( | 15000 | A | × | 5 100 | + | 200 | + | 200 | ) | − | 122051 | + | 15000 | A | × | 20 100 |
| 方程右边 = | 840000 | + | 32193 5 | + | 200 | + | 200 | + | ( | 200 | + | 100 | + | 15000 | A | × | 13 10000 | ) | + | ( | 15000 | A | × | 5 100 | + | 200 | + | 200 | ) | − | 122051 | + | 3000 | A |
| = | 3623938 5 | + | ( | 200 | + | 100 | + | 15000 | A | × | 13 10000 | ) | + | ( | 15000 | A | × | 5 100 | + | 200 | + | 200 | ) | + | 3000 | A |
| 15000 | A | = | 3623938 5 | + | ( | 200 | + | 100 | + | 15000 | A | × | 13 10000 | ) | + | ( | 15000 | A | × | 5 100 | + | 200 | + | 200 | ) | + | 3000 | A |
| 方程右边 = | 3623938 5 | + | 200 | + | 100 | + | 15000 | A | × | 13 10000 | + | ( | 15000 | A | × | 5 100 | + | 200 | + | 200 | ) | + | 3000 | A |
| = | 3623938 5 | + | 200 | + | 100 | + | 39 2 | A | + | ( | 15000 | A | × | 5 100 | + | 200 | + | 200 | ) | + | 3000 | A |
| = | 3625438 5 | + | 6039 2 | A | + | ( | 15000 | A | × | 5 100 | + | 200 | + | 200 | ) |
| = | 3625438 5 | + | 6039 2 | A | + | 15000 | A | × | 5 100 | + | 200 | + | 200 |
| = | 3625438 5 | + | 6039 2 | A | + | 750 | A | + | 200 | + | 200 |
| = | 3627438 5 | + | 7539 2 | A |
| 15000 | A | = | 3627438 5 | + | 7539 2 | A |
| 15000 | A | − | 7539 2 | A | = | 3627438 5 |
22461 2 | A | = | 3627438 5 |
| A | = | 3627438 5 | ÷ | 22461 2 |
| = | 3627438 5 | × | 2 22461 |
| = | 1209146 5 | × | 2 7487 |
| A | = | 2418292 37435 |
| A | = | 64.59976 |