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: 1, 3, ['p', '5665', '3001']

SOLUTION: 8666

PROBLEM: 21, 24, ['6903', '3349', '4585', 'C', 'w', 'I', 'U', 'n', '2689', 'W', '6601', '7357', '5063', 'y', '5779', 'L', '4257', 'd', '653', 'k', '8349', 'r', 'Y', '3019', 'E', '797', 'm']

SOLUTION: 11368

PROBLEM: 27, 28, ['655', '4641', '1475', 'r', 'b', 'i', 'w', '1099', '7725', 'J', 'K', '6287', '8431', 'g', 'b', 'j', '1085', '3715', '7411', 'J', '147', 'T', '2335', 'K', '3607', '1179', '1765', 'T']

SOLUTION:
1765