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: 11, 14, ['7277', '3335', 'z', 'R', 's', '8267', 'q', '2743', 'w', '4003', 'G', 'O', 'Y', '4063', 'q', '7001', '7381', 'D', '6247', '7211', 'I', '2277', '7543', 'Y', '8243', '3127', 'V', '8709']

SOLUTION: 4063

PROBLEM: 17, 21, ['7037', '9447', 'f', 'R', '1237', '5735', '1327', '1371', 'd', '3025', 'B', '9165', '3447', '6135', '3315', 'l', '8069', 'g', 'H', 'e', '4523', '3149', 'H', 'o', '3947']

SOLUTION: 12592

PROBLEM: 6, 20, ['H', '9331', 'r', 'c', '1087', 'y', 'b', 'g', 'I', 'c', 'S', 'x', 'X', 'J', 'B', 'w', '1811', 'P', '8081', 'u', '6453', 'Y']

SOLUTION:
9892