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:
['J', 'm', '1255', 'S']
answer:
1255


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


question:
['9007', 'g', 'V', '1283', '805', 'y']
answer:

11095