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: ['3215', 'h', '9133', '2771', 'F', 'x', '9033', '709', 'q']

Answer: 24861


Question: ['2913', 'b', 'j', '7591', 'O', 's', '5589', '4995', '7503', 'U', 'S', 'C', '6797']

Answer: 35388


Question: ['1407', 'g']

Answer:
1407