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: 9, 18, ['K', 'h', '5031', '6439', '2939', 'Z', 'X', 'v', 'y', 'T', 'm', '1909', '4663', 'f', 'j', '1315', 'M', 'v', 'Q', '6147', 'G', '8607', 'U', 'o', '8921']

7887