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: 7, 16, ['l', '1165', '8087', 'M', '6269', '6349', 'R', 'm', 'j', '9437', '3875', 'n', 'R', 'Y', '4427', 'g', '6231', 'm', '1139', '3891', '3773', '1303', 'Y', '7347']

SOLUTION: 17739

PROBLEM: 1, 3, ['m', '6287', '41', 'W', '9113', 'P', 'w', 'H', '1651', '8837', '1907', 'e', 'N', 'q', 'j', 'd', 'c', '2459', '6635']

SOLUTION: 6328

PROBLEM: 1, 4, ['3757', 'z', '9029', '6903', '7185']

SOLUTION:
19689