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: ['G', 'e', 'R', '4427', '3401', '3065', 'I', '2781', '6829', '5261']

Answer: 25764


Question: ['J', '177', '8449', '2067', 'a', 'G', 'p', 'd', '5161', 'M', '2403', '5541', 'q', '4375', 'O']

Answer: 28173


Question: ['8351', 'P', 'c', '6733', '6741', 'J', '7229', '7519', '9133', 'j', 'O', 'c', 'S', '6367', '9747', 'o', 'P', '8313', '8959', '5955']

Answer:
85047