Hi!

zipWith(\) z1 z2 ........ this fails but works when using * or + or - ....... I also tried using div and `div` but they failed to.

The divide operator is slash (/) not backslash (\):

> zipWith (/) [0.1, 0.2] [0.2, 0.4]
[0.5,0.5]

Also, div should work as long you're using a Integral type like Int (you may be using Float or Double):

> zipWith div [1, 2] [2, 2]
[0,1]

Cheers