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:
['w', '4181', 'g', 'j', '1823', 'q', 'i', '709']
answer:
6713


question:
['D', 'm', 'P', '2433', '6731']
answer:
9164


question:
['6941', 'I', 'j', '6135', '6525', '7853', '5607']
answer:

33061