instruction:
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:
['6815', 'A', '1055', '4687', '8675', '4615', 'a', '2127', 'w', 'l', 'J', '5025', 'c', 't', '9727', 'G', '8431']
answer:
51157


question:
['Q', '8317', '8989']
answer:
17306


question:
['9901', 'A', '827', 'o', '5933', 'Q', '6925', 'C', '4207', 'H', 'q', '6687']
answer:

34480