[分享] A Little Magic of Mathematics

swimmingGIRL

• Grab a calculator. (You won't be able to do this one in your head.)
• Remove the last 4 digits of your phone number then key in the rest of the digits of your phone number (NOT including the area code.)
• Multiply by 160
• Add 2
• Multiply by 125
• Add the last 4 digits of your phone number
• Add the last 4 digits of your phone number again
• Subtract 250
• Divide by 2

Do you recognize the answer?