instruction:
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.
question:
3, 10, ['r', 'A', 'l', '7169', '3249', 'T', 'O', 'g', 'F', 'M', 'R', '171', 'M', '2449', '3749', 'f']
answer:
10418


question:
6, 18, ['6619', 'W', '8541', '1049', '3973', '6575', 'C', '4961', '2469', '3553', '6905', 'p', 'c', 'K', '2663', 'm', 'B', '4379', 'D', '6557', 'r', 'N', '4875', 'u', 'X', '3133', '6353', '1635']
answer:
31505


question:
3, 8, ['n', 'm', 'M', 'j', 'B', '9677', '8325', 'S', '6495', '4709', '1509', 't', '9241', '253', '9653', '5301', '8607', 'j', 'i', 'y', '6991']
answer:

18002