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: 5, 14, ['r', '5851', '5957', '1951', '9761', '6805', '2323', 'J', '703', '9479', '6653', 'L', '513', 'A', 'v', '4273', '391', 'b']

SOLUTION: 36237

PROBLEM: 1, 9, ['6869', '4103', 'S', 'k', '6745', 'n', 'x', '7657', 'F', 'd', '1953']

SOLUTION: 25374

PROBLEM: 15, 23, ['1423', 'y', 'l', 'P', 'A', '5835', '573', 'W', '3103', '9241', '2261', 'F', 'T', '7731', '639', 'T', 'V', 'o', '6023', 'w', '1355', 'j', '6037', '9943', 'T', '2933', 'N', 'a', 'a']

SOLUTION:
14054