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, 13, ['5653', '9869', '5325', '7307', '5513', '2167', '2393', 'p', 'F', '2011', '5431', '2695', 'v', 'p', '3743', 'j', 'y', '5903', '5135', '467', '8443', 'C', 'i', 'w', 'y']

SOLUTION: 27517

PROBLEM: 2, 9, ['7111', '835', 'W', '6975', '4459', 'B', 'B', 'Z', 'o']

SOLUTION: 12269

PROBLEM: 2, 7, ['6503', '6015', 'S', 'C', 'L', '4549', '2335', '7187', '2023', 'q', '1433', 'r', '4013', '8989', '4205', '4697', '6797', 'Y', 'V', 'c', '2443', 'C', 'y', 'e', '8445', '8161', 'C']

SOLUTION:
12899