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', 'P', 'y', '4891', '1539', 'J', '5737']
answer:
12167


question:
['D', '8591', 'b', 'n', 'e', '883', '8923', '245', 'z', '5643', 'C', '2911', '9275', '711', '7299', '3449', '4799', '6065']
answer:
58794


question:
['9707', '9075', 'q', '5879', '3719', 'g', '4951', '2815']
answer:

36146