Math
trick
1.
Grab a calculator. (you won't be able to do this one in your head)
2.
Key in the first three digits of your phone number (NOT the area
code) (Our friends in Europe
use any seven digit number.)
3. Multiply by 80
4. Add 1
5. Multiply by 250
6. Add the last 4 digits of
your phone number
7. Add the last 4 digits of
your phone number again.
8. Subtract 250
9. Divide number by 2
10. Say "Ta-frickety-da".