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:
['d', 'b', 'W', '3201', 'C', 'o', '5187', '9723', '8177', 'F', '6703', 'U', '1393', '1035', '3507', '5993', '3857', 'r', 'C', 'j']
answer:
48776


question:
['8669', '9115', '2573', '9261']
answer:
29618


question:
['3307', 'o', '9549', '2987', '8167', 'g', '8361', '1955', '5763', '3519', '4949', 'w', '153', '3917', '6087', '8277']
answer:

66991