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: 6, 9, ['8047', 'Q', 'A', '2811', '8953', 'P', '4515', 'f', 'K', 'u', 'g', 'R', 'p', '667', '8703', '2903', '6299', '417', '3317', 'O', 'z', '3507', '8969', '6193', '2549']

SOLUTION: 4515

PROBLEM: 4, 5, ['3365', 'x', '3373', '8905', '1527', '9433', '2907', 'j', 'x', '7201', '307', '4507', '785', '6749', '4419', '2743']

SOLUTION: 10432

PROBLEM: 4, 25, ['8883', 'P', '9055', '1285', 'U', '1247', 'y', 'G', 'Z', 'K', '9961', '1987', '135', '2557', 'L', '1081', 'p', 'Z', 'D', '9829', '2289', '177', 'B', 'p', '2295', '9125']

SOLUTION:
32843