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: ['6815', 'A', '1055', '4687', '8675', '4615', 'a', '2127', 'w', 'l', 'J', '5025', 'c', 't', '9727', 'G', '8431']

Answer: 51157


Question: ['9869', '7701', 'H', 'o', 'v', '1431', 'O', 'L']

Answer: 19001


Question: ['1821', 'd', '9349', 'S', '7861', '9447', 'I', 'H', 'Y', '9439']

Answer:
37917