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:
['d', '4553']
answer:
4553


question:
['1057', '3937']
answer:
4994


question:
['7677', '2195', '4959', '3727', 'W', 'G']
answer:

18558