Can anyone help me solve a Math Olympiad Fraction problem?

What is the problem?

The numbers M and N are different numbers selected from the first 25 counting numbers: If M is larger than N, what is the smallest value that the expression below can have?

m * n over m-n?

Sue, are you able to help? My son has to go to bed soon and we are anxious to figure out how to do this....appreciate your help!!!

I thought I had answered this question.

http://www.jiskha.com/display.cgi?id=1300844239

Of course, I can help you solve a Math Olympiad fraction problem! Please go ahead and state the problem, and I will explain the solution step-by-step.