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:
['3319', 'e', 'c', 'G', '2399', '1557', '4813', 'z', 'U', '4895', 's', '1193', 'A', 'G']
answer:
18176


question:
['1969', 'm', 'Y', 'N', '7331', 'J', 'b', '2485', 'x']
answer:
11785


question:
['b', 'g', 'A', 'e', '6405']
answer:

6405