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: 3, 5, ['X', '8101', 'v', '283', 'v', 'O', 'Y']

SOLUTION: 283

PROBLEM: 3, 5, ['u', 'Y', '4165', '1421', '7617']

SOLUTION: 13203

PROBLEM: 3, 4, ['L', 'T', 'W', 'S', '7345', '9439', 'L', 'b']

SOLUTION:
0

