Phone number trick

Do you want the calculator to know your number???

Only works for the seven-digit numbers. In case of mobile phones, just use the last 7 digits.

Check your phone number e.g. 0-918-123-4567

1) Key-in the first 3 digit of your phone number into a calculator
2) multiply by 80
3) add 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 it your phone number???

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