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: ['5499', '39', 'Q', 'b', 'W', '7155', '2515']

Answer: 15208


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

Answer: 63154


Question: ['i', '1825', 'a', 'B', '2701', 'k', '389', '8651', '6075']

Answer:
19641