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:
['2151', '7511']
answer:
9662


question:
['D', 'm', 'P', '2433', '6731']
answer:
9164


question:
['F', '1065', 'k', '3929', 'z', '6409', '5295', 'z', '5725', 'x']
answer:

22423