[Haskell-cafe] Getting the x out

How do I get the x out of Just x? Michael ============= safeDivision :: Float -> Float -> Maybe Float safeDivision x y = if y == 0 then Nothing else Just (x/y) *Main Data.List> safeDivision 10 5 Just 2.0 *Main Data.List> 3 + (safeDivision 10 5) <interactive>:1:0:     No instance for (Num (Maybe Float))       arising from a use of `+' at <interactive>:1:0-22     Possible fix: add an instance declaration for (Num (Maybe Float))     In the expression: 3 + (safeDivision 10 5)     In the definition of `it': it = 3 + (safeDivision 10 5) *Main Data.List>