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', '5607', 'Q', 'j', 'I', '3745', '3031']
answer:
12383


question:
['s', '425', '6135']
answer:
6560


question:
['A', '5589', '3355', 'Y', '8211', '941', '2341', 'h', '7975', '7609', '3153', '6655', 's', 'B', '5937', '5163']
answer:

56929