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, 8, ['D', '1285', '5209', '1711', '9729', 'C', '2863', '9595', 'F', 'f', '8515', 'g', 'e', '2363']

SOLUTION: 30392

PROBLEM: 9, 13, ['2813', 's', 'z', 'G', '5927', '4415', 'T', 'c', '7029', 'e', 'o', 'd', '5913', 'y']

SOLUTION: 12942

PROBLEM: 1, 4, ['B', 'k', '1775', '9707', '1675', '521', 'k']

SOLUTION:
11482