Is this your handphone Number

Try this out...quite surprisingly that u will b able to find such a genius in this world could come out with this formula.

Is this your handphone number?
1. key-in the first 3 digits of your handphone number (not the 01x number) into the calculator
2. multiply by 80
3. add 1
4. multiply by 250
5. plus last four digits of phone number
6. plus last four digits of phone number again
7. minus 250
8. Finally, divide by 2
Is this your handphone number?