TASK 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.
PROBLEM: 1, 2, ['9621', '3231', '5905', 'M', '3233', 'j', '2449', '3805', '4923', '235', '407', 'w']

SOLUTION: 12852

PROBLEM: 8, 13, ['6413', 'n', 'z', 'T', 'R', 'Y', 'D', 'W', 'L', '521', '3411', 'B', 'O', '6757']

SOLUTION: 3932

PROBLEM: 3, 7, ['3567', '545', '5571', '533', '9327', '6725', 'u']

SOLUTION:
22156