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

Answer: 63154


Question: ['D', 'P', 'y', '4891', '1539', 'J', '5737']

Answer: 12167


Question: ['N', 'J', '3163', 'r', '4683', 'q', 'z', '8665', 'f', 'T', 'z', 'd', '2687']

Answer:
19198