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: ['e', 'T', 'O', 'q', '5511', 'G', 'm', 'E', '2153', 'O', '1139', '5097', 'n', '5653', 'v']

Answer: 19553


Question: ['i', 'w', '8117', '2823', 'C', 'x', 'w', '5959', 'g', 'e', 'L', 'V', 'i', 'w', 'n']

Answer: 16899


Question: ['1571', '2077', '8543', 'X', '223', 'Y', '1791', 'P', '1225', '3071']

Answer:
18501