[list-ops]: change // to / and make have foldl/foldr call func(acc, el), consistent with the problem spec

[IsaacG]

No description provided.

[BethanyG]

@IsaacG -- Thank you for this. Pls remember to add yourself as an exercise contributor. After that, I will approve and merge.

[IsaacG]

@IsaacG -- Thank you for this. Pls remember to add yourself as an exercise contributor. After that, I will approve and merge.

Done. Thanks!

[asarkar]

The arguments to the lambda are inconsistent with the problem description.

foldr (given a function, a list, and an initial accumulator, fold (reduce) each item into the accumulator from the right using function(item, accumulator));

    def test_foldr_direction_dependent_function_applied_to_non_empty_list(self):
        self.assertEqual(foldr(lambda acc, el: el / acc, [1, 2, 3, 4], 24), 9)

The first argument to the lambda should be el, not acc.

[BethanyG]

@asarkar - if you'd like to report an issue, please do so on our forum. A long-closed PR is not the place to do it. Thanks.