Calculator magic!Step 1: Type a number youd like to magically predict and save it by clicking "%".Step 2: Write the predicted number on a piece of paper and give it to the crowd for safe keeping.Step 3: Do whatever calculation you want by asking the crowd for random numbers using "+", "*" and "/" operations.Step 4: Click the "-" button and tell the crowd you are going to blindly type a number in without even looking.The trick: No matter what digits you click, the calculator will actually type the digits of the number that needs to be subtracted in order to reach your predicted number.Step 5: Amaze the crowd by clicking "=" and showing that the result is actually the same as the number you gave then in the beginning of the trick :).Step 6: Press "AC" and then "%" in order to disable the magical "-" if someone is suspecting it does something special :D.
Shahata Calculator
