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: ['C', '9973', 'b', '693', 'y', 'H', 'C', 'P', 'b', 'J', 'f', 'T', '2317', 'O', '5755', '8201', 'p', 'y', '8721', 'i']

Answer: 35660


Question: ['D', '8591', 'b', 'n', 'e', '883', '8923', '245', 'z', '5643', 'C', '2911', '9275', '711', '7299', '3449', '4799', '6065']

Answer: 58794


Question: ['4031', '6763', '6407', 'i', 'J', 'f', '9201', 'Z', 'J', 'O', '9115', 'T', '2965', '4961', 'V', 'h']

Answer:
43443