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: 16, 22, ['F', '197', '9799', 'W', '9967', 'V', '9955', '5143', 't', 'f', '749', 'N', 'b', '8049', 'W', '6835', '8007', 'm', '7233', 'B', 'I', '599', '6101', 'G', 'i', '2271', 'h', 'P']

SOLUTION: 22674

PROBLEM: 2, 8, ['743', '3417', '5979', 'J', 'f', '4707', 'k', 'i', '2167', 'V', 'g']

SOLUTION: 14103

PROBLEM: 1, 2, ['4743', '1157', '4093']

SOLUTION:
5900