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:
['b', '5689', '119', 'p', 'P', 'J', 'w', 'm', '7397', 'Y', '447', 'O', 'p', '319', 'H', 'U']
answer:
13971


question:
['5715', 'r', 'R']
answer:
5715


question:
['6099', '5951', '1913', '2645', 'h', 'b']
answer:

16608