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:
['2485', 'Q', 'G', '5533', 'Y', '21', 'D', 'S']
answer:
8039


question:
['r', '3537', 'T', '3611', 'k', '4983', 'h', '4317', '8727', 'E', '6471', '8465', 'f', '5429', 'T', '2169', '2171', 'P', '6941', 'D']
answer:
56821


question:
['v', 'K', 'H', '9073', '5269', '3827', 'x']
answer:

18169