| ( | 56243 10 | − | y | ) | ÷ | y | = | 21 1000 |
| Multiply both sides of the equation by: | y |
| ( | 56243 10 | − | y | ) | = | 21 1000 | y |
56243 10 | − | y | = | 21 1000 | y |
| - | y | − | 21 1000 | y | = | - | 56243 10 |
| - | 1021 1000 | y | = | - | 56243 10 |
56243 10 | = | 1021 1000 | y |
1021 1000 | y | = | 56243 10 |
| y | = | 56243 10 | ÷ | 1021 1000 |
| = | 56243 10 | × | 1000 1021 |
| = | 56243 | × | 100 1021 |
| y | = | 5624300 1021 |
| y | = | 5508.619001 |