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: 20, 21, ['3975', '2459', 'X', '337', 'X', '5453', '9019', 'O', '4911', '1019', 'y', 'D', 'K', 'W', 'v', '2479', 'a', 'o', '4867', '9195', '3269']

SOLUTION: 12464

PROBLEM: 6, 9, ['7895', '3853', 's', '7', '1351', '5409', 'y', 'R', '329', 'l', 'v', '569', '8461', 'O', 'p', '2845']

SOLUTION: 5738

PROBLEM: 24, 29, ['m', '6979', '1733', 'u', 'A', '1463', 'k', 'A', 'w', '4917', '8693', '8651', '269', 'X', '6195', '79', '8331', '205', '5339', '5345', 'g', '2417', '3179', 't', 'I', '3597', 'f', '7475', '399', 'g']

SOLUTION:
11471