instruction:
In this task, you are given an input list A. You need to find all the elements of the list that are numbers and calculate their sum.
question:
['t', 'v', 'B', 'Y']
answer:
0


question:
['8669', '9115', '2573', '9261']
answer:
29618


question:
['9199', '8375']
answer:

17574


