19851 100 | ÷ | 3 100 | × | ( | 1 | − | 1 | ÷ | ( | 1 | + | 3 100 | ) | × | n | ) | = | 0 |
19851 100 | ÷ | 3 100 | × | 1 | − | 19851 100 | ÷ | 3 100 | × | 1 | ÷ | ( | 1 | + | 3 100 | ) | × | n | = | 0 |
| 6617 | − | 6617 | ÷ | ( | 1 | + | 3 100 | ) | × | n | = | 0 |
| 方程两边同时乘以: | ( | 1 | + | 3 100 | ) |
| 6617 | ( | 1 | + | 3 100 | ) | − | 6617 | n | = | 0 |
| 6617 | × | 1 | + | 6617 | × | 3 100 | − | 6617 | n | = | 0 |
| 6617 | + | 19851 100 | − | 6617 | n | = | 0 |
681551 100 | − | 6617 | n | = | 0 |
| - | 6617 | n | = | 0 | − | 681551 100 |
| - | 6617 | n | = | - | 681551 100 |
681551 100 | = | 6617 | n |
| 6617 | n | = | 681551 100 |
| n | = | 681551 100 | ÷ | 6617 |
| = | 681551 100 | × | 1 6617 |
| = | 52427 100 | × | 1 509 |
| n | = | 52427 50900 |
| n | = | 1.03 |