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, 3, ['g', 'g', 'K']

SOLUTION: 0

PROBLEM: 1, 15, ['p', 'N', '7935', '1649', '1509', 'N', 'q', 'L', '1917', '9753', 'C', '6387', '4037', 'D', '1099', '5329', '1703', '7715', 'c']

SOLUTION: 34286

PROBLEM: 8, 14, ['i', '2929', '9353', 'T', '5451', 'n', 'y', '2861', 's', 'G', '7717', '3833', '3753', 'u', 'E', 'T', 'I']

SOLUTION:
18164