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', '5207', 'E', '119', 'g', '2991', 'G', 'g', 'u']

Answer: 8317


Question: ['2175', '4539', 'L', 'T', 'q', '2407', 'F', 'V', 'b', '9475', '2279', '4469', '6231']

Answer: 31575


Question: ['q', '2975', 'v', 'e', '3365', '8123', '1625', '8137', '1619', 'M', 'm', '2603', '2267', 'o', '5675', 'T', '997', '3341']

Answer:
40727