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:
['6565', 'T', 'O', '2901', '5121', 'y', '9617', 't', '7825']
answer:
32029


question:
['9989', 'B', 'E', '5181']
answer:
15170


question:
['t', '135', '5631', '5161', '5353', '7813', '9807', '5343']
answer:

39243