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.
--------
Question: ['3107', 'D', '9595', '8807', 'Q', 'o', 'T', 'N', 'A']

Answer: 21509


Question: ['5467', '3013', '8325', '4005', 'J', 'V', '395', '7477', 'E', 's', '1337', 'g', 'v', '8569', '9757', 'x', '3909', '2983', 's', '7917']

Answer: 63154


Question: ['267', '315', 'e', 'l', '2331', 'x', '3973', '7295', '1805', 'O', 'Y', 'H', '2649', '5593', 'W', '65', '5227', '1279']

Answer:
30799