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

SOLUTION: 16002

PROBLEM: 11, 19, ['Y', 'r', 't', '2931', '9519', '1071', '2417', 'p', 'F', '7509', 'l', '3451', '1907', 'z', 'E', 'n', '1251', 'k', 'p']

SOLUTION: 6609

PROBLEM: 14, 18, ['4235', 'd', '7915', '2595', '1123', '475', '7987', '287', '4659', '45', '737', 'l', 'Z', '5245', '8021', 'g', 'D', '9801', '2327', '339']

SOLUTION:
23067