Is This Your Phone Number?

Try this formula and you'll discover the magic in math!

(Ignore your area code & only use your 7- digit phone number)

1) key-in the first 3 digits of your phone number into the calculator
2) multiply by 80
3) then plus 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 the answer your phone number???