numbers

Got this from my brother in an email he sent me asking about the resume he's asked me to edit and condense.

Mari main Magic - Ini ke nombor telefon anda??

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 handphone number????