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: 11, 16, ['8617', '6133', '5505', '6601', 'y', 'a', '1019', 'r', 'P', 'd', 'P', '9647', '9831', 'I', 'z', 'k', '749', '8975']

SOLUTION: 19478

PROBLEM: 1, 3, ['m', '6287', '41', 'W', '9113', 'P', 'w', 'H', '1651', '8837', '1907', 'e', 'N', 'q', 'j', 'd', 'c', '2459', '6635']

SOLUTION: 6328

PROBLEM: 10, 14, ['H', 'M', '8787', '3901', '3789', '7241', 'U', '6533', '413', '3781', '9285', 'H', '8037', '5993']

SOLUTION:
27096