| x | ( | 13 10 | ÷ | 113 100 | + | 13 10 | ÷ | 113 100 | × | 13 10 | ÷ | 113 100 | + | 13 10 | ÷ | 113 100 | × | 13 10 | ÷ | 113 100 | × | 13 10 | ÷ | 113 100 | ) | = | 65 |
| 方程左边 = | x | × | 13 10 | ÷ | 113 100 | + | x | × | 13 10 | ÷ | 113 100 | × | 13 10 | ÷ | 113 100 | + | x | × | 13 10 | ÷ | 113 100 | × | 13 10 |
| = | x | × | 130 113 | + | x | × | 16900 12769 | + | x | × | 2197000 1442897 | + | x | × | 259246000 163047361 | + | x | × | 5599713600 163047361 |