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: 1, 7, ['173', '5875', 'C', '7417', '3565', '1949', '537', '7707', 'o', 'y']

SOLUTION: 19516

PROBLEM: 16, 28, ['o', 'W', '1825', 'X', '6499', 'w', '8997', '1947', 'd', '6999', 'z', 'Q', '947', 'Z', '1087', '3885', 'q', 'W', 'E', '3043', 'y', '3937', 'W', '7763', 'v', '3669', 'H', 'u']

SOLUTION:
22297