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, 8, ['3573', '9813', '3867', 'i', '5291', '1987', '9811', 'A']

SOLUTION: 17089

PROBLEM: 4, 13, ['2921', '5905', '2835', '3625', '2481', '1657', '6239', '2393', 'u', '3255', '7061', '8197', 'k', '269', '1135', '5833', '7847', 'C', '4371', '4783', '9613']

SOLUTION: 34908

PROBLEM: 1, 7, ['J', 'l', '9145', '5805', '4377', '2851', '8781', '7353', '145']

SOLUTION:
30959