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: 9, 11, ['8449', 'j', '8735', '2839', '2773', '1659', 'V', 'I', 'x', 'V', 't', '7837', 'F', 'N', '4179', 'G', 'f', '8193']

SOLUTION: 0

PROBLEM: 3, 6, ['x', '7739', '1923', '5829', '2215', 'M', '1901', 'A', '1585', 'W', '2433', '8947', '2217', '7879', 'i', '8543', '7457']

SOLUTION: 9967

PROBLEM: 7, 9, ['q', 'I', '5109', 'f', '4455', '1967', '9711', 'Y', '2425', '7533']

SOLUTION:
12136