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:
['7669', '3367', 'A', 'Z', '6173', '4391', 'f', 'S', '9657', '2631']
answer:
33888


question:
['x', '1887', 'E', '3995', '5677', '2749', '9951']
answer:
24259


question:
['S', 'F', '3449', 'O', '4245', 'a', '2281', 'q', 'f', '1315', '8933', 'P', '5815', '3899', '8105']
answer:

38042