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: 1, 5, ['O', '4521', 'w', '6745', 'W', '7743', '4113', '7179', '9751', '2365', '9161', 'j', '1339', '6927']

SOLUTION: 11266

PROBLEM: 11, 18, ['7053', '4271', '3175', '3997', '4153', '3255', 'd', '4507', 'q', 'm', 'V', '9999', 'Q', 'v', '8543', '2835', '1545', '3549']

SOLUTION: 26471

PROBLEM: 8, 20, ['6439', 'S', 'j', '8681', '8907', '2197', 'j', '9819', 'z', 't', 'T', '6697', 'O', 'W', '5097', 'A', '1561', 'F', 'V', '8815']

SOLUTION:
31989

