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: 10, 16, ['V', 'b', '2575', '385', 'U', 'I', 'Y', '2647', 'V', 'k', '6379', 'W', '1883', 'n', 'K', '3001', '6791', 'I', '4285', 'f', 'i']

SOLUTION: 11263

PROBLEM: 8, 9, ['3587', '5903', 'B', '9671', 's', 'A', '7259', '6961', '2601', '9719']

SOLUTION: 9562

PROBLEM: 1, 2, ['9141', 'd', 'E', 'l', 'O', '8083', '5949', 't', '3341', '2221']

SOLUTION:
9141