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: 7, 15, ['k', '7859', '7463', 'f', 'd', 'L', 'O', 'K', '4629', 'n', 'T', '3785', 'I', 'o', 'Q', '8331', 'U', 'W', '2311', 'u', '5821', '9193']

SOLUTION: 8414

PROBLEM: 4, 11, ['4679', 'V', '3421', '8995', '2885', '5395', 'E', '2169', 'i', 'B', '9279', 'G', 'N', 'I', 's', '6827', 'S']

SOLUTION: 28723

PROBLEM: 17, 26, ['P', '8243', '4983', 'L', 'B', '4403', 'm', 'y', 'Z', 'v', '2339', '6523', 'x', '7945', '2589', '4333', 'a', '7165', 'l', '9757', 'V', '6477', '8021', '3789', 'F', 'n']

SOLUTION:
35209