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: 1, 4, ['H', 'V', 'w', '4621', 'C', '3763', '1271', '967']

SOLUTION: 4621

PROBLEM: 2, 2, ['M', '3453', '5733', '2337', '9975', '1827', 't', '4937']

SOLUTION: 3453

PROBLEM: 6, 7, ['4115', '7583', '7069', '4107', '537', '6393', '2809']

SOLUTION:
9202