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, ['F', '7137', '6127', 'q', '6637', '1423', 'w', '4175', '8971', '3999', '193']

SOLUTION: 34470

PROBLEM: 6, 23, ['s', '5425', '7485', 'I', 'r', 'I', '3943', '4067', '3773', '2459', '1525', '2093', '1103', '7373', 'h', 'j', '3209', 'o', 'Q', 'I', '1295', '4569', '4301', 'C', 'N', '269']

SOLUTION: 39710

PROBLEM: 2, 4, ['4083', 'N', 'P', 'r', '8967', '1065', 'l', 'T']

SOLUTION:
0