Amazing Math Trick

Here's a math trick just for fun.
(You might need a calculator.)


1. Key in the first three digits of your phone number (NOTthe area code)
2. Multiply by 80
3. Add 1
4. Multiply by 250
5. Add the last 4 digits of your phone number
6. Add the last 4 digits of your phone number again.
7. Subtract 250
8. Divide number by 2
Recognize the number?

(Taken from God Gave Us Laughter at Studylight.org)

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