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: ['1057', '3937']

Answer: 4994


Question: ['Y', '263', '641', '1163', 'p', 'r', 'L', '4425', 'C', '7585']

Answer: 14077


Question: ['5813', 'p', '5609', 'e', '1371', 'j', 'w', 'f', 'T', '1349', '7265', '101']

Answer:
21508