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:
['w', 'V', '3359', '8847', '7551', '2481', 'Y', 'j', 'L', 'G', '7905', 'v', '4141', '2229', 'k', 'H', '3517', '3885', '3665', 'O']
answer:
47580


question:
['m', '6153', 'A', '6173', 'x', '7527', '8501', 'g', 'r', 'K', 'I', '3103', '8347']
answer:
39804


question:
['5047', 'd', 'e', '7813', 'Q', '8589', 'P', 'c', 'T', '6637', '6331', '5073', 'p', 'O', 'L']
answer:

39490