Is this your h/p number?

1) Key-in the first 3 digit 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 digit of phone number
6) plus last four digit of phone number again
7) minus 250
8) divide by 2 at last

Is it your hand phone number????
AMAZING ISN'T IT!!!