| A | ÷ | ( | 1 | + | 13 100 | ) | × | 23 5000 | = | A | ÷ | ( | 1 | + | 13 100 | ) | × | 13 100 | − | 75112543 100 |
| 方程两边同时乘以: | ( | 1 | + | 13 100 | ) | , | ( | 1 | + | 13 100 | ) |
| A | × | 23 5000 | ( | 1 | + | 13 100 | ) | = | A | × | 13 100 | ( | 1 | + | 13 100 | ) | − | 75112543 100 | ( | 1 | + | 13 100 | ) | ( | 1 | + | 13 100 | ) |
| A | × | 23 5000 | × | 1 | + | A | × | 23 5000 | × | 13 100 | = | A | × | 13 100 | ( | 1 | + | 13 100 | ) | − | 75112543 100 | ( | 1 | + | 13 100 | ) | ( | 1 | + | 13 100 | ) |
| A | × | 23 5000 | × | 1 | + | A | × | 23 5000 | × | 13 100 | = | A | × | 13 100 | × | 1 | + | A | × | 13 100 | × | 13 100 | − | 75112543 100 | ( | 1 | + | 13 100 | ) | ( | 1 | + | 13 100 | ) |
| A | × | 23 5000 | + | A | × | 299 500000 | = | A | × | 13 100 | + | A | × | 169 10000 | − | 75112543 100 | ( | 1 | + | 13 100 | ) | ( | 1 | + | 13 100 | ) |
2599 500000 | A | = | 1469 10000 | A | − | 75112543 100 | ( | 1 | + | 13 100 | ) | ( | 1 | + | 13 100 | ) |
2599 500000 | A | = | 1469 10000 | A | − | 75112543 100 | × | 1 | ( | 1 | + | 13 100 | ) | − | 75112543 100 | × | 13 100 | ( | 1 | + | 13 100 | ) |
2599 500000 | A | = | 1469 10000 | A | − | 75112543 100 | ( | 1 | + | 13 100 | ) | − | 976463059 10000 | ( | 1 | + | 13 100 | ) |
2599 500000 | A | = | 1469 10000 | A | − | 75112543 100 | × | 1 | − | 75112543 100 | × | 13 100 | − | 976463059 10000 | ( | 1 | + | 13 100 | ) |
2599 500000 | A | = | 1469 10000 | A | − | 75112543 100 | − | 976463059 10000 | − | 976463059 10000 | ( | 1 | + | 13 100 | ) |