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, ['x', '971', '3029']

SOLUTION: 4000

PROBLEM: 7, 17, ['149', 'O', 'h', '7873', '9227', '5655', '8945', 'I', 'c', 'V', 'Z', 'I', 'L', '1153', 'L', 'Y', '2031', 'B', 'S', 'x', 'u', '2483', 'M', '2469', '4991']

SOLUTION: 12129

PROBLEM: 8, 10, ['V', '5565', '3235', '1805', 'M', 'h', '3799', '8913', 'E', 'Q', '8579', '9699', 'G', '5569', 'S', '7827', '7781', '9299', 'R']

SOLUTION:
8913