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:
['3051', 'Z', 'q', 'u', 'x', '2747', 'e', 'B', '4225', 'Q', 'R', '4629', 'F']
answer:
14652


question:
['G', 'e', 'R', '4427', '3401', '3065', 'I', '2781', '6829', '5261']
answer:
25764


question:
['4275', 'B', '4539', 'v', '7017', 'q', 'i', 'R', '5479', 'q', 'v', 'A', 'I', '5223', '6329', 'i', 'x', 'k']
answer:

32862