Upon trying to simplify this expression ..
Worlfram gets the "Input interpretation" right...
but its result or "alternative form" is ..
Which is wrong, it should be (950/X²) or am i missing something?
I think you would get the result 950/X² from the input 38/(((x) (x/5) (0.0047625))/(0.0238125)). The division is not associative: (a/b)/c is not the same as a/(b/c), even if the two-dimensional fraction notation obscures this fact with fraction lines of the same length and thickness.
Well, it makes sense now, thank you very much.