| ( | 200 | + | 500 | + | 50 | + | 3 100 | v | ) | × | 23 20 | + | 3 50 | v | = | v |
| 方程左边 = | 200 | × | 23 20 | + | 500 | × | 23 20 | + | 50 | × | 23 20 | + | 3 100 | v | × | 23 20 | + | 3 50 | v |
| = | 230 | + | 575 | + | 115 2 | + | 69 2000 | v | + | 3 50 | v |
| = | 1725 2 | + | 189 2000 | v |
1725 2 | + | 189 2000 | v | = | v |
189 2000 | v | − | v | = | - | 1725 2 |
| - | 1811 2000 | v | = | - | 1725 2 |
1725 2 | = | 1811 2000 | v |
1811 2000 | v | = | 1725 2 |
| v | = | 1725 2 | ÷ | 1811 2000 |
| = | 1725 2 | × | 2000 1811 |
| = | 1725 | × | 1000 1811 |
| v | = | 1725000 1811 |
| v | = | 952.512424 |