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: 8, 22, ['h', '2971', 'l', 'F', 'e', 'f', 'b', 'I', 'b', '4759', 'm', 'w', '6179', 'R', '2875', '3469', '3801', 'm', '6987', 'A', 'c', '6303', '8135', 'c']

SOLUTION: 34373

PROBLEM: 1, 2, ['7321', '6233']

SOLUTION: 13554

PROBLEM: 2, 7, ['C', 'C', '9639', '7815', 'N', '1713', '8339', '4237']

SOLUTION:
27506