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: 10, 11, ['L', 'Z', '4501', '4131', 'a', '8057', 'K', 'P', '4713', '8889', 'b', '3927', 'k', '6005', 'T', 'w', 'S', '3963', '2727']

SOLUTION: 8889

PROBLEM: 12, 14, ['U', '5071', 'V', '9887', 'E', '3913', '3459', 'l', 'V', 'n', 'B', '655', 'L', 's', '2687', '9761', '2477', 'D', '8385', 'U', 'm', 'q', '4365', 'j']

SOLUTION: 655

PROBLEM: 4, 8, ['y', '7385', 'G', '4977', '9205', '9031', '8037', '3603', 'X', 's', 'H', '7653']

SOLUTION:
34853