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.
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Question: ['8609', '8045', '2517', '3821', 'x', '3895', 't']

Answer: 26887


Question: ['1845', '273', '6921', 'u', '165', 'n', 'y', 'I', 'u', 'X', '5503', 'L', 'G', 'V', '6223', '1123', 'v']

Answer: 22053


Question: ['3853', 'f', 'J', '4051', '1997', '3585', 'n', '2373', 'P', '1273', '4867', '7635', '4315']

Answer:
33949