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:
['6957', '4603', '5299', '8451', '9803', 'b']
answer:
35113


question:
['1845', '273', '6921', 'u', '165', 'n', 'y', 'I', 'u', 'X', '5503', 'L', 'G', 'V', '6223', '1123', 'v']
answer:
22053


question:
['A', '8353', '8139', '5471', '7079', '1787', 'T', '4611', 'q', 'K', 'S', '4133', '427', '7655', 'S', '313']
answer:

47968