1) Grab your calculator
*you won't be able to do this in your head*
2)Type in the first three digits of your phone number *NOT your area code*
3) Multiply by 80
4) Add 1
5) Multiply by 250
6) Add the last four digits of your phone number
7) Add the last four digits of your phone number again
8) Subtract 250
9) Divide number by 2

*you won't be able to do this in your head*

2)Type in the first three digits of your phone number *NOT your area code*
3) Multiply by 80
4) Add 1
5) Multiply by 250
6) Add the last four digits of your phone number
7) Add the last four digits of your phone number again
8) Subtract 250
9) Divide number by 2
