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: 7, 12, ['K', '5995', '5183', '67', '563', '9143', 'M', 'H', '2923', '1825', 'y', '373', 'm', 'w', 'x']

SOLUTION: 5121

PROBLEM: 3, 6, ['r', '8615', '4477', 'k', 'Z', 'B']

SOLUTION: 4477

PROBLEM: 1, 3, ['4035', 'd', '7023', 'U', '6971', '9497', '5371', '7377', '6583', 'X']

SOLUTION:
11058