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: 8, 8, ['9433', '6635', 't', '4425', 'R', '5893', 'z', 'P', 'V', 'f']

SOLUTION: 0

PROBLEM: 11, 16, ['3847', '4705', '7023', '7353', '9569', '7437', 'G', '7437', 'O', '8789', 'k', 'r', '8083', '7213', '4027', '595', 'P', 'n', '1377', '3271', '6443', '3251', 'K', 'K']

SOLUTION: 19918

PROBLEM: 9, 16, ['7977', 'Z', 'o', 'U', '9057', '6017', '6159', '8493', '4249', 'u', '2923', 'f', '9793', 'u', 'u', '9065', 'w', 'c', 't', '9545', 'x', '1215', 'A', '9677']

SOLUTION:
26030