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:
['E', 'y']
answer:
0


question:
['339', 'h', 'd', '7449', 'e', 'u', '5055', '7029', '9009', 'G', 'U', '3', '441', '3273', 'K', '3827', '7069', 'x']
answer:
43494


question:
['T', 'U', 'V', 'N', 'S', '7831', 'E', '7621', 'M', 'O', 'R', 'h', 'L', '2225', '9231', '6517', 'Z', '7643', 'S', '4447']
answer:

45515