[Haskell-beginners] '/' instead use 'DIV'. why?

[Alexander Chen]

Hi, 

Prelude> :t (/)
(/) :: Fractional a => a -> a -> a

Prelude> :t div
div :: Integral a => a -> a -> a

Prelude> 6 / length [23,34,45]
error 

Prelude> 6 / 3
2.0

Could somebody explain to me why this is?

thanks,

Alexander Chen
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