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:
['2765', '6767', '7645']
answer:
17177


question:
['4437', '1265', '1519', 'K', 'Q', 'b', 'n', 'J', '6631', 'K', 'q', 'D', 'U', 'u', '3653', '5169', 'L', 's']
answer:
22674


question:
['Y', '1457', 'Y', 'L', 'l', 'm', 'O', 'h', 'H', '1319', 'R', '1325', 'l', 'G', 'I', 'c', '6873', '3031', '3791', '5085']
answer:

22881