Do This.

1. Key in the first three digits of your phone number (NOT the Area code…)
2. Multiply by 80
3. Add 1
4. Multiply by 250
5. Add to this the last 4 digits of your phone number
6. Add to this the last 4 digits of your phone number again.
7. Subtract 250
8. Divide number by 2

What number did you end up with?
Look familiar?

Pretty cool.