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: 2, 5, ['8407', '1329', '2243', '2547', '5371', '6023', '7139', 'K', '339', '3301', '6771', 'Z', '9983', '17', 'V']

SOLUTION: 11490

PROBLEM: 2, 6, ['S', 'y', '2729', '9935', 'T', 'H', '3063', '9587']

SOLUTION: 12664

PROBLEM: 3, 4, ['9141', '3901', 'C', '509', 'G', '6643', 'g', 'S', 'r', '8899', 'b']

SOLUTION:
509