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: 4, 7, ['3291', 'e', 'm', 'E', 'e', '3201', 'E', 'c', '2355', '6491']

SOLUTION: 3201

PROBLEM: 12, 23, ['A', 'i', '4191', 'B', '2297', '3959', '1125', 'c', '739', '7887', 'p', '8173', '5301', '1969', '9737', '7011', '9845', 'r', '2977', 'z', 'Q', 'N', '3847', 's', 'D', '3391', 'T']

SOLUTION: 48860

PROBLEM: 6, 12, ['6793', '469', 'q', 'y', '7563', '1', '9785', 'B', 'V', 'g', 'u', '8327', '2693']

SOLUTION:
18113