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: 12, 24, ['3749', 'r', '9823', 'Y', 'K', 'V', 'q', 'H', '3273', '3091', '9531', 'E', '2219', '3101', 'P', 'k', 'r', 'a', 'T', 'I', 'j', 'i', '4045', 'K', 'r']

SOLUTION: 9365

PROBLEM: 2, 10, ['N', 'K', '4585', 'd', '8219', '3831', 'e', '7037', 'h', 'd', 'c', '577', 'c', '3559', '4059', 'M', '5349', 'V', 'L', '1807']

SOLUTION: 23672

PROBLEM: 4, 17, ['d', '1807', '8055', 'c', '6865', 'L', '9491', '8281', 'e', 'c', 'O', 'F', '3211', '1019', '6063', '6989', '7695', '5093', '8701', '9339', '8203', '577', 'L', 'V', '4911', '1709', 'c', '4823', '5615', 'K']

SOLUTION:
49614