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:
['2913', 'b', 'j', '7591', 'O', 's', '5589', '4995', '7503', 'U', 'S', 'C', '6797']
answer:
35388


question:
['x', '5259', 'T', 'L', 'C', 'H', '2493', 'u', '3851', '2439', 'U']
answer:
14042


question:
['m', 'r', 'E', 'r', 'L', '9447', '8759', '2097', 'G', '8693', '1631', '7387', 'W', '231', '8507', '5975', '5175', '7807', 'y']
answer:

65709