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, ['3707', 'J', 'H', '8907', '597', 'Z', '9725', 'g', 'R']

SOLUTION: 19229

PROBLEM: 5, 9, ['1523', 'C', 'd', 'I', '6913', '5553', '2769', '767', 'v', '231', 'I', 'p', '9033', 'H', '2007', 'g', '5837', 'Z']

SOLUTION: 16002

PROBLEM: 5, 11, ['9535', 'L', '5957', 'm', 'B', 'W', '2105', '4959', 'f', '395', 'a', 'W', 'C']

SOLUTION:
7459