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, 4, ['3757', 'z', '9029', '6903', '7185']

SOLUTION: 19689

PROBLEM: 2, 15, ['l', '5597', 'M', 'l', '6065', '7949', 'e', '433', '8159', 'N', 'Z', '5597', 's', 'k', '6973', '8387', 'n', 'W', '9895']

SOLUTION: 40773

PROBLEM: 7, 17, ['5591', '5583', '3729', '7587', '6251', 't', '5881', 'n', '1331', '2509', 'b', 'M', 'W', 'q', '7979', 't', 'k', 'C', '2587', 'B', 'Y', 'N', '6389', '3833', '759', '7245', '3029', '9145', '5155', '6139']

SOLUTION:
17700