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:
['u', 'W', '1561', '9243', '4923', '9385']
answer:
25112


question:
['E', 'X', 'C', 'v', '2803', 'g', 'b', '763']
answer:
3566


question:
['j', 'V', '2037', '453', 'l', 'q', 'u', 'k', '8403', '2501', 'b']
answer:

13394