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, 18, ['P', '1429', '3883', '1883', 'u', 'K', 'N', 'j', 'u', 'H', 'y', '7785', '7371', '6869', '1613', '6515', '695', 'U', 'u']
answer:
36614


question:
1, 11, ['R', 'k', '4813', '655', '3185', 'M', '4199', '1857', '9829', '6389', 'X', '3405', 'P', 'x']
answer:
30927


question:
3, 5, ['S', 'b', 'a', 'B', 't', 'i', '1903', 'L', 'n', '1561']
answer:

0