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, 14, ['J', '4147', 'z', 'M', 'Z', 'd', 'f', 's', '5083', 'L', '7107', 'g', '7047', 'E', '5931', '141', '6889']

SOLUTION: 23384

PROBLEM: 2, 2, ['M', '3453', '5733', '2337', '9975', '1827', 't', '4937']

SOLUTION: 3453

PROBLEM: 7, 7, ['U', 'a', '4899', 'i', 'g', '7937', 'T', '3811', '1079', 'V', '8515', '1685', '3481', 'S', 'F', 'c']

SOLUTION:
0