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, 3, ['Z', 'X', 't']

SOLUTION: 0

PROBLEM: 2, 22, ['Y', '203', 'i', 'b', '2019', '7785', 'u', '9161', 'k', '6543', 'h', '5221', 'Z', 'i', 'B', '4521', 'I', 'Z', '4959', '8841', 'd', 'p', 'i', 'R', 's', '7297', 'y']

SOLUTION: 49253

PROBLEM: 14, 16, ['q', '6889', 'O', '7121', 'C', 'b', 'y', '6847', 'k', 'd', '235', '4587', 'Y', '3533', 'M', 'R', '1213']

SOLUTION:
3533