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, 6, ['237', 'x', 'Q', 'J', '4629', 'q', '2831', 'i', 'm']

SOLUTION: 4866

PROBLEM: 4, 13, ['2921', '5905', '2835', '3625', '2481', '1657', '6239', '2393', 'u', '3255', '7061', '8197', 'k', '269', '1135', '5833', '7847', 'C', '4371', '4783', '9613']

SOLUTION: 34908

PROBLEM: 4, 6, ['Y', '8617', 'Q', 'k', 'k', 'I', '595', 'k', 'B', 'B', '1627', 'G', 'p', 'v', '4249', '6615', 'P', 'a', '9781', 'a', 'A', '2751', 'o', 'Q', 'l', '1719', 'o', 'Y', '351']

SOLUTION:
0