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.
2, 2, ['a', 'P', '7397', 'y', '9731', '7159', '3409', 'm', '3791', 'P', '1921', '4977', '9829', '1035', 'f', 'H', '7843']