Follow the steps in order. Use a calculator and/or pencil & paper.
  1.   Pick any three digit number. Make sure the units and hundreds digits are not the same.

  2.    Make a new number by reversing the order of the digits you just picked.

  3.   Subtract the smaller of your two numbers from the larger. Write down the answer.

  4.   Reverse the digits of this answer and write that number.

  5.   Add those last two numbers.

Visit this page and you will discover that I've predicted your answer!

Mr. Willis' Page