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:
['4425', 'x', '1959', 'C', 'c', 'D', 'M', '8317', 'q', 'x', '4277', 'N', 'z', 'I', '1921', 'o', 't']
answer:
20899


question:
['3239', 'E', 'q', '6037', 'O', 'g']
answer:

9276