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:
['V', '2633', '3269', 'r', 'Q', '3517', '2571', 'G', '4105', 'm', 'z', 'B', 'A']
answer:
16095


question:
['v', '3135', 'J', 'm', 'a']
answer:
3135


question:
['o', 'g', '8169', 'L', 'e', '9497', '3359', 'Q', 'i', 'b', 'a', '7459', 'k', 'G', 'i', 'M']
answer:

28484