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, 4, ['t', 'Z', '8689', 'I', '5589', 'H', 'Z']

SOLUTION: 0

PROBLEM: 2, 5, ['8407', '1329', '2243', '2547', '5371', '6023', '7139', 'K', '339', '3301', '6771', 'Z', '9983', '17', 'V']

SOLUTION: 11490

PROBLEM: 1, 4, ['u', '9463', '9945', '3819', '4301', '8885', '1077', '1771', 'v', '6471', 'c', '6687', '5163', '4669']

SOLUTION:
23227