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:
['3705', '9217', 'C', '4609']
answer:
17531


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


question:
['Y', '5777', '2483']
answer:

8260