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, 10, ['f', 'r', 'Z', '1989', '5035', '1623', '9335', '7495', '8663', '2199', '2047', 'o']

SOLUTION: 36339

PROBLEM: 5, 6, ['937', '3595', '1279', '8705', '3587', '5879']

SOLUTION: 9466

PROBLEM: 3, 8, ['G', 'u', '4953', 'E', '7785', '2281', 'Q', '6151', 'x', 'V', '241', 'g', '3305', 'm', '8509']

SOLUTION:
21170