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:
['h', '2335', '2669', '6035', '9901', '7721', 's', '6181', 'C', 'l', 'x', '8275', '1103', 'S', '6447']
answer:
50667


question:
['1869', 'q', '5919', 'D', '7733', '2641', 'h', '1327']
answer:
19489


question:
['7419', 'M', 'X', '3243', '2603', 'J', '1977', 'l', 'C', 'h', 'y', '1959', 'Q', '2163', 'o', 'E']
answer:

19364