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: 6, 16, ['4469', '9515', 'z', '153', '123', '787', '3795', '1737', '6047', 'l', '165', 'C', 'p', '5221', 'M', '4149', 'L']

SOLUTION: 21901

PROBLEM: 1, 2, ['9769', 'z', '6349', 't', '9391', '7181', '2405', 'j']

SOLUTION: 9769

PROBLEM: 8, 11, ['5429', 'Z', 'z', 'Y', '5519', '6923', 'L', 'y', 'e', 'U', 'W', '4259', '909', 'C']

SOLUTION:
0