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:
['s', '425', '6135']
answer:
6560


question:
['u', 'W', '1561', '9243', '4923', '9385']
answer:
25112


question:
['G', 'G', '8413', '1493', 'n', '1119', '2497', 'I']
answer:

13522