Definition: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to return the sum of all the numerical elements in the list A between the positions i and j (including positions i and j). Return 0 if no numerical element is present in the list between the given ranges. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
Input: 1, 6, ['s', 'I', '4735', '8705', 'a', 'h', '6305', 'w', 'A', '2695', '6455', '8247', '435', '3971', '1643']

13440