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: 4, 4, ['t', 'Z', '8689', 'I', '5589', 'H', 'Z']

SOLUTION: 0

PROBLEM: 14, 18, ['4235', 'd', '7915', '2595', '1123', '475', '7987', '287', '4659', '45', '737', 'l', 'Z', '5245', '8021', 'g', 'D', '9801', '2327', '339']

SOLUTION: 23067

PROBLEM: 4, 8, ['1997', '9809', '8037', '8531', 'y', '7641', 'y', '2007']

SOLUTION:
18179