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: ['q', '8155', 'L', 'v', '2657', 'X', 'v', '2353', '151', 'R', '967', '4327']

Answer: 18610


Question: ['1969', 'm', 'Y', 'N', '7331', 'J', 'b', '2485', 'x']

Answer: 11785


Question: ['8683', '6351', 'h', 'L', '729', 'W', 'z', '3171', '4827', '5189', 's']

Answer:
28950