| 1447 | × | 3 | ( | 1 | + | 16 | × | 900 | ÷ | ( | 900 | + | 2000 | ) | × | ( | 1 | + | 1 20 | ) | ) | = | y |
| 1447 | × | 3 | × | 1 | + | 1447 | × | 3 | × | 16 | × | 900 | ÷ | ( | 900 | + | 2000 | ) | × | ( | 1 | + | 1 20 | ) | = | y |
| 4341 | + | 62510400 | ÷ | ( | 900 | + | 2000 | ) | × | ( | 1 | + | 1 20 | ) | = | y |
| 方程两边同时乘以: | ( | 900 | + | 2000 | ) |
| 4341 | ( | 900 | + | 2000 | ) | + | 62510400 | ( | 1 | + | 1 20 | ) | = | y | ( | 900 | + | 2000 | ) |
| 4341 | × | 900 | + | 4341 | × | 2000 | + | 62510400 | ( | 1 | + | 1 20 | ) | = | y | ( | 900 | + | 2000 | ) |
| 4341 | × | 900 | + | 4341 | × | 2000 | + | 62510400 | ( | 1 | + | 1 20 | ) | = | y | × | 900 | + | y | × | 2000 |
| 3906900 | + | 8682000 | + | 62510400 | ( | 1 | + | 1 20 | ) | = | y | × | 900 | + | y | × | 2000 |
| 12588900 | + | 62510400 | ( | 1 | + | 1 20 | ) | = | 2900 | y |
| 12588900 | + | 62510400 | × | 1 | + | 62510400 | × | 1 20 | = | 2900 | y |
| 12588900 | + | 62510400 | + | 3125520 | = | 2900 | y |
| 78224820 | = | 2900 | y |
| - | 2900 | y | = | - | 78224820 |
| 78224820 | = | 2900 | y |
| 2900 | y | = | 78224820 |
| y | = | 78224820 | ÷ | 2900 |
| = | 78224820 | × | 1 2900 |
| = | 3911241 | × | 1 145 |
| y | = | 3911241 145 |
| y | = | 26974.075862 |