| ( | 6 5 | ( | 15 | + | 5 | + | 3 20 | ) | + | 7 5 | ( | 3 | + | 2 | + | 2 | ) | ) | × | 6 5 | × | 3 5 | = | 2447 100 | k |
| 方程左边 = | ( | 6 5 | ( | 15 | + | 5 | + | 3 20 | ) | + | 7 5 | ( | 3 | + | 2 | + | 2 | ) | ) | × | 18 25 |
| ( | 6 5 | ( | 15 | + | 5 | + | 3 20 | ) | + | 7 5 | ( | 3 | + | 2 | + | 2 | ) | ) | × | 18 25 | = | 2447 100 | k |
| 方程左边 = | 6 5 | ( | 15 | + | 5 | + | 3 20 | ) | × | 18 25 | + | 7 5 | ( | 3 | + | 2 | + | 2 | ) | × | 18 25 |
| = | 108 125 | ( | 15 | + | 5 | + | 3 20 | ) | + | 126 125 | ( | 3 | + | 2 | + | 2 | ) |
| = | 108 125 | × | 15 | + | 108 125 | × | 5 | + | 108 125 | × | 3 20 | + | 126 125 | ( | 3 | + | 2 | + | 2 | ) |
| = | 324 25 | + | 108 25 | + | 81 625 | + | 126 125 | ( | 3 | + | 2 | + | 2 | ) |
| = | 10881 625 | + | 126 125 | ( | 3 | + | 2 | + | 2 | ) |
| = | 10881 625 | + | 126 125 | × | 3 | + | 126 125 | × | 2 | + | 126 125 | × | 2 |
| = | 10881 625 | + | 378 125 | + | 252 125 | + | 252 125 |
| = | 15291 625 |
15291 625 | = | 2447 100 | k |
| - | 2447 100 | k | = | - | 15291 625 |
15291 625 | = | 2447 100 | k |
2447 100 | k | = | 15291 625 |
| k | = | 15291 625 | ÷ | 2447 100 |
| = | 15291 625 | × | 100 2447 |
| = | 15291 25 | × | 4 2447 |
| k | = | 61164 61175 |
| k | = | 0.99982 |