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: 6, 16, ['P', '8933', '2757', 'y', 'p', '6687', '6903', 'S', 'b', '7221', 'V', 'B', '3633', 'G', '1209', 'J', '641', '1449', 's', 'w', 'C', '5801', 'Y']

SOLUTION: 25653

PROBLEM: 17, 22, ['4123', '6299', '2781', '759', 'f', 'A', 'X', '2549', 'K', '8119', '8725', 'e', 'I', 'S', '1429', 'd', '8051', 'Q', 'y', '1045', '763', 't', 'J', 'J', '169', 'b', '721']

SOLUTION: 9859

PROBLEM: 1, 1, ['P', 'x', '2833']

SOLUTION:
0