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: ['D', '9679', 'e', '5537', 'G', 'l', '2653', 'a', 'Y', '8467', 'q', 'L', '7239', 'O']

Answer: 33575


Question: ['8683', 'p', '47', '8983', 'g', 'u']

Answer: 17713


Question: ['V', '4081', 'o', 'C', '2741', 'q', 'Q', 'g', '4223', '3133']

Answer:
14178