from /b/ plz Help

okay I am a starting cs major and I have one little snag

I get most of java so far but have to do:

is some number a multiple of 50

Now I divide the number by 50, Number/50 but dont know what to do after that.  This is due in a noon Saturday and I woke up early to do it can you guys help

multOf50 :: Integral a => a -> Bool
multOf50 n =
    if (mod n 50) > 0
    {
         then True;
         else False;
    }