how can u divide 1 by 2.54, with showing your work?
For starters, you can't divide by a decimal unless you are a calculator.
think of it as a fraction 1/2.54
and multiply by 100/100 (to make the bottom a whole number)
so it becomes
100 divided by 254
As a fraction it is easy.
100/254 = 50/127
As a decimal you need to do it by long division and it is a bit hard to show you that in this forum
I found a good you tube clip that will show you how it is done,
http://www.youtube.com/watch?v=Gn2pdkvdbGQ
+118653 
