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', '5885', 'u', 'Y', 's', 'w', 'j', '9629', '9505', 'U']
answer:
25019


question:
['F', 'z', '1159', '345']
answer:
1504


question:
['W', 'U', 'r', 'q', '6811', 'k', '1425', 'n', 'U', 'w', '6473', 'O', 'H', 'K', 'y', 'u', '4977', '3373']
answer:

23059