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: 8, 9, ['1329', '3107', 's', 'z', '2013', '1633', 'i', '1229', '4201', 'M', '3127']

SOLUTION: 5430

PROBLEM: 3, 5, ['E', 'f', '6509', 'o', '8541', 'L', '6419', 'P', 'O', '8463', '5771']

SOLUTION:
15050