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:
['D', '5207', 'E', '119', 'g', '2991', 'G', 'g', 'u']
answer:
8317


question:
['Q', '9787', '7533', '9489', 'C', '1753', '5121', '1405', '9267', '4815', 's', '5887']
answer:
55057


question:
['5495', '2475', 's', '8507', '2687', 'H', 'x', 'Z', 'J', 't', 'I']
answer:

19164