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:
['r', 'b', 'G', 'H', '255', '6809', '5133', '1059', '4317', 'P', '7219', 'd', '805', 'G', '5243', '8305', '8509', 'o']
answer:
47654


question:
['J', 'S', 'S', 'U', 'w', '7691', '7529', 'B', '3861', '4557', 'd', '569', '1547']
answer:
25754


question:
['P', 'Y', 'n', '7403', 'U', '9855', '2877', '5193', '2589', 'D', '5179', '4683', 't', '6119', 'l', '1515', 'b', '1623']
answer:

47036