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, 1, ['R', '3969', 'O', '3281', 'X', '5173', 'K', 'G', 'm', 'Y', '4981', 'x', '9127', 'X', 'w', 'm', '3873', '5887', '7405', 't', 'P', 'K', '8459', '9699']

SOLUTION: 0

PROBLEM: 9, 12, ['6001', '6723', '1813', 'S', '3331', 'T', '297', '8105', '7529', 'f', '1459', '323', '8077', 'N', 'W', 'G', 's', 'z', '7559', 't', 'F', 'h', '3771', '975']

SOLUTION: 9311

PROBLEM: 3, 5, ['1377', 'n', 'H', '1573', '5357', '977', '8991', 'l']

SOLUTION:
6930