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: 3, 14, ['D', 'Q', 'W', '3925', '7569', '2455', '9499', 'A', '3205', '9459', 't', '9053', 'q', 'T']

SOLUTION: 45165

PROBLEM: 1, 18, ['1137', '7521', '1291', 'o', '391', '5329', 'X', '391', 'i', '6893', '8547', '9361', 'Z', 'O', '9701', '4097', '9273', '3877', '1589', '9097']

SOLUTION: 67809

PROBLEM: 6, 14, ['4781', '7533', 'F', '6799', 'E', '1319', '599', 'm', '2145', 'a', '5201', 'x', '6011', 's', '881', '2441']

SOLUTION:
15275

