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:
15, 21, ['w', 'R', '9247', '5745', '5397', 'U', 'R', 'e', '8067', 'e', '2851', 'O', 'F', '4705', '5393', 'q', 'b', 'J', '211', '4319', 'o', 'h', 'Z', '4423', 'j', '2691', 'U']
answer:
9923


question:
11, 13, ['O', '4429', 'F', '2013', 'v', 'p', 'y', '507', 'g', '935', '1827', 'Q', '4267', 'A', 'm', 'g', 'k', 'S', 'a', 'C', 'q', 'W', 'M']
answer:
6094


question:
7, 8, ['y', '1745', 'n', 'd', '7075', '8173', 'F', '33', '4173']
answer:

33