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: 10, 22, ['4049', '2745', 'g', 'T', 'N', 'u', 'Q', '3687', '5871', 'i', '9139', '585', '8435', '5761', '5825', '5909', 'f', '6317', '8227', '4051', 'E', '5167', '6953', 'g', '4113', '2493']

SOLUTION: 59416

PROBLEM: 9, 12, ['4189', '4575', 'i', 'e', 'Y', '5595', 'U', 'M', 'b', 'n', '5347', 'v', 'w', 'Z', 'F', '503', 'G', '4429', '3087', '295', 'W']

SOLUTION: 5347

PROBLEM: 6, 11, ['L', 'b', '9455', 'B', '2511', '8057', 'N', '8869', '1223', 's', 'W', '2015', '591', '5359', 'Y', 'q', '837', '1715', 'E', 'c', 'M', '5871']

SOLUTION:
18149