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:
['7379', 'I', '2031', '8419', 'w', 'b', '9827', 'X', 'Y', 't', '3789', 'B', 'c', '6599', 'F', '6169', 'V']
answer:
44213


question:
['8529', '2657', '1599', 'b', '8187', '7005', '7481']
answer:
35458


question:
['j', 'A', '6479', '8725', '9125', '2441', '7221', 'R', '9759', '5853', 'n', 'G', 'j', 'o', 'o', 'R', '5985', 's']
answer:

55588