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, 10, ['H', 'P', '1985', '1797', '9115', 'V', 'o', '2405', '7817', 't', 'C']

SOLUTION: 23119

PROBLEM: 1, 4, ['2025', '6689', '1227', '3943', 'z', '719', '8941', 'b', 'V', 'w', '5267', '2403', 'N', '5771']

SOLUTION: 13884

PROBLEM: 4, 7, ['4269', 'Q', 'A', '7349', '8149', '7105', 'Z', 'Y', 'k', '779', 'v', 'o', '6603', 'o', 'x', 'h', 'g', '1429', 'r', 'l', 'T', '4351', '1049', 'M']

SOLUTION:
22603