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, ['D', 'W', '5783']

SOLUTION: 0

PROBLEM: 11, 19, ['Y', 'r', 't', '2931', '9519', '1071', '2417', 'p', 'F', '7509', 'l', '3451', '1907', 'z', 'E', 'n', '1251', 'k', 'p']

SOLUTION: 6609

PROBLEM: 5, 20, ['6745', 'u', 'H', 'j', 'C', 'o', '293', '1361', 'z', '8839', '7115', 's', '4667', 'w', 'J', 'v', 'o', '2377', '5491', 'x', 'O', '161', 'M']

SOLUTION:
30143