| 20 | = | 108 25 | ( | 1 | + | j | ) | + | 45159 10000 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| 方程右边 = | 108 25 | × | 1 | + | 108 25 | j | + | 45159 10000 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 |
| = | 108 25 | + | 108 25 | j | + | 45159 10000 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) |
| = | 108 25 | + | 108 25 | j | + | 45159 10000 | × | 1 | ( | 1 | + | j | ) | + | 45159 10000 | j | ( | 1 | + | j | ) | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| = | 108 25 | + | 108 25 | j | + | 45159 10000 | ( | 1 | + | j | ) | + | 45159 10000 | j | ( | 1 | + | j | ) | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| = | 108 25 | + | 108 25 | j | + | 45159 10000 | × | 1 | + | 45159 10000 | j | + | 45159 10000 | j | ( | 1 | + | j | ) | + | 126 25 | ( | 1 | + | j | ) |
| = | 108 25 | + | 108 25 | j | + | 45159 10000 | + | 45159 10000 | j | + | 45159 10000 | j | ( | 1 | + | j | ) | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| = | 88359 10000 | + | 88359 10000 | j | + | 45159 10000 | j | ( | 1 | + | j | ) | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) |
| = | 88359 10000 | + | 88359 10000 | j | + | 45159 10000 | j | × | 1 | + | 45159 10000 | j | j | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| = | 88359 10000 | + | 88359 10000 | j | + | 45159 10000 | j | + | 45159 10000 | j | j | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| = | 88359 10000 | + | 66759 5000 | j | + | 45159 10000 | j | j | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) |
| = | 88359 10000 | + | 66759 5000 | j | + | 45159 10000 | j | j | + | 126 25 | × | 1 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 126 25 | j |
| = | 88359 10000 | + | 66759 5000 | j | + | 45159 10000 | j | j | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 126 25 | j | ( | 1 | + | j | ) |
| = | 88359 10000 | + | 66759 5000 | j | + | 45159 10000 | j | j | + | 126 25 | × | 1 | ( | 1 | + | j | ) | + | 126 25 | j | ( | 1 | + | j | ) |
| = | 88359 10000 | + | 66759 5000 | j | + | 45159 10000 | j | j | + | 126 25 | ( | 1 | + | j | ) | + | 126 25 | j | ( | 1 | + | j | ) | + | 126 25 |
| = | 88359 10000 | + | 66759 5000 | j | + | 45159 10000 | j | j | + | 126 25 | × | 1 | + | 126 25 | j | + | 126 25 | j |
| = | 88359 10000 | + | 66759 5000 | j | + | 45159 10000 | j | j | + | 126 25 | + | 126 25 | j | + | 126 25 | j | ( | 1 | + | j | ) |
| = | 138759 10000 | + | 91959 5000 | j | + | 45159 10000 | j | j | + | 126 25 | j | ( | 1 | + | j | ) | + | 126 25 | j | ( | 1 | + | j | ) |
| = | 138759 10000 | + | 91959 5000 | j | + | 45159 10000 | j | j | + | 126 25 | j | × | 1 | + | 126 25 | j | j |
| = | 138759 10000 | + | 91959 5000 | j | + | 45159 10000 | j | j | + | 126 25 | j | + | 126 25 | j | j | + | 126 25 |
| = | 138759 10000 | + | 117159 5000 | j | + | 45159 10000 | j | j | + | 126 25 | j | j | + | 126 25 | j | ( | 1 | + | j | ) |
| = | 138759 10000 | + | 117159 5000 | j | + | 45159 10000 | j | j | + | 126 25 | j | j | + | 126 25 | j | × | 1 |
| = | 138759 10000 | + | 117159 5000 | j | + | 45159 10000 | j | j | + | 126 25 | j | j | + | 126 25 | j | ( | 1 | + | j | ) |
| = | 138759 10000 | + | 117159 5000 | j | + | 45159 10000 | j | j | + | 126 25 | j | j | + | 126 25 | j | × | 1 |
| = | 138759 10000 | + | 117159 5000 | j | + | 45159 10000 | j | j | + | 126 25 | j | j | + | 126 25 | j | + | 126 25 |
| = | 138759 10000 | + | 142359 5000 | j | + | 45159 10000 | j | j | + | 126 25 | j | j | + | 126 25 | j | j |