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: 2, 5, ['9615', '7859', 'D', 'J', '1471']

SOLUTION: 9330

PROBLEM: 2, 5, ['m', 'o', 't', 'c', 'S', 'R', 'I', '4937', '1127', '1611', '285', '3653', '309', 'y', '513', 'i', '8005', 'n', '6915', '8585', 'G', 'A', '1921', 'd']

SOLUTION: 0

PROBLEM: 12, 14, ['831', 'j', 'a', '9831', 'W', '2489', '305', 'e', 'J', '8541', 'D', 'h', '6055', '9339', 'j', 'c', '6433', '9659', '993', '4559', 'H', '3275', '7185', 'f', '87']

SOLUTION:
15394