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', '7807', '9395', 'T', 'c', '5139', '2827', 't', 'T', 'm', '3717', 'U', '3225', '7419', '2481', 'p', 'C', '5277']
answer:
47287


question:
['2175', '4539', 'L', 'T', 'q', '2407', 'F', 'V', 'b', '9475', '2279', '4469', '6231']
answer:
31575


question:
['b', '2101', 'r', 'I', '4359', 'B', 's', 'x', '6529', 'Y', '4803', 'x', '4677', '9159', 'q', 'r']
answer:

31628