| ( | 27739 5 | − | y | ) | ÷ | y | = | 12 500 |
| Multiply both sides of the equation by: | y |
| ( | 27739 5 | − | y | ) | = | 12 500 | y |
27739 5 | − | y | = | 12 500 | y |
| - | y | − | 12 500 | y | = | - | 27739 5 |
| - | 128 125 | y | = | - | 27739 5 |
27739 5 | = | 128 125 | y |
128 125 | y | = | 27739 5 |
| y | = | 27739 5 | ÷ | 128 125 |
| = | 27739 5 | × | 125 128 |
| = | 27739 | × | 25 128 |
| y | = | 693475 128 |
| y | = | 5417.773438 |