| ( | 50000 | ( | 1 | + | 3 100 | ) | + | y | ) | × | 3 100 | = | 50000 | × | 3 100 | + | 500 |
| Left side of the equation = | 50000 | ( | 1 | + | 3 100 | ) | × | 3 100 | + | y | × | 3 100 |
| = | 1500 | ( | 1 | + | 3 100 | ) | + | y | × | 3 100 |
| = | 1500 | × | 1 | + | 1500 | × | 3 100 | + | 3 100 | y |
| = | 1500 | + | 45 | + | 3 100 | y |
| = | 1545 | + | 3 100 | y |
| 1545 | + | 3 100 | y | = | 50000 | × | 3 100 | + | 500 |
| Right side of the equation = | 1500 | + | 500 |
| = | 2000 |
| 1545 | + | 3 100 | y | = | 2000 |
3 100 | y | = | 2000 | − | 1545 |
3 100 | y | = | 455 |
| y | = | 455 | ÷ | 3 100 |
| = | 455 | × | 100 3 |
| y | = | 45500 3 |
| y | = | 15166.666667 |