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: 7, 17, ['n', '1023', '2743', 'r', '5855', 'd', '4425', '3381', 'x', '9609', 'f', 'o', '8513', 'e', '7331', 'N', '7949', 'O']

SOLUTION: 41208

PROBLEM: 5, 16, ['t', 'r', 'O', 'q', 'B', '6327', 'f', 'R', 'H', '4429', 'o', '5347', 'U', 'h', '7067', '237', 'i', 'k', 'K', '461', 'L', '4105', 'i', '6483']

SOLUTION: 23407

PROBLEM: 5, 18, ['R', 'o', '7865', 'K', 't', '269', 'r', 'q', '9981', 'Q', '1483', '2833', 'T', '3955', 'w', 'l', 's', '3701', '9653', 'T', '6289', 'V', '1681']

SOLUTION:
22222