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: ['H', 'i', '8085', 'E', 'q']

Answer: 8085


Question: ['9903', 'H', '757', 'J', '6481', '9789', 'H', '3285', 'V', 'X', '5229', '7197']

Answer: 42641


Question: ['r', 'V', '8169', 'x', 's', '519']

Answer:
8688