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: 2, 9, ['7111', '835', 'W', '6975', '4459', 'B', 'B', 'Z', 'o']

SOLUTION: 12269

PROBLEM: 3, 16, ['1165', 't', '4833', 'b', '6361', '1175', '3943', 'd', 'l', '7519', 'j', 'X', 'E', 'A', 'm', '6469', '9429', '2415', '5187', 'k', 'd', '9607', '1375', '8913', 'c', 'A', '9229']

SOLUTION: 30300

PROBLEM: 1, 4, ['7515', '8683', '5937', '8435', 'P', '4299', '2663', 'o', 'S', '9805', 'p', '5031', '7889', '8865']

SOLUTION:
30570