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: ['4437', '1265', '1519', 'K', 'Q', 'b', 'n', 'J', '6631', 'K', 'q', 'D', 'U', 'u', '3653', '5169', 'L', 's']

Answer: 22674


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

Answer: 58794


Question: ['7587', '5439', '7675', '6189', 'B', '1111', '4405', 'e', '9397', '5167', '4137', 'B', '9661', '5041', '8245', 'v']

Answer:
74054