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: 14, 29, ['1447', 'P', 'X', '5411', '4235', 'K', '6749', '171', '9349', 'K', 'n', '3477', '1183', '9933', '6259', '5793', '1719', 'V', 'C', '1983', '9947', 'I', 'c', '4425', 'Q', 'v', 'a', '3783', '9665', 'z']

SOLUTION: 53507

PROBLEM: 11, 11, ['1049', 'a', '7521', 'f', 'Z', '2973', '7245', 'e', '1807', 'e', '1325', '7327', 'r']

SOLUTION: 1325

PROBLEM: 8, 9, ['x', '3025', '9331', '1171', 'J', '3251', 'S', 'x', 'f', 'm', '263', '6173', '3255', '9295', 'c', '5153', 'w']

SOLUTION:
0