| ( | 54109 10 | − | y | ) | ÷ | y | = | 11 500 |
| Multiply both sides of the equation by: | y |
| ( | 54109 10 | − | y | ) | = | 11 500 | y |
54109 10 | − | y | = | 11 500 | y |
| - | y | − | 11 500 | y | = | - | 54109 10 |
| - | 511 500 | y | = | - | 54109 10 |
54109 10 | = | 511 500 | y |
511 500 | y | = | 54109 10 |
| y | = | 54109 10 | ÷ | 511 500 |
| = | 54109 10 | × | 500 511 |
| = | 54109 | × | 50 511 |
| y | = | 2705450 511 |
| y | = | 5294.422701 |