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:
['h', '2295', '2913', 'I', '5273', 'L', '2739', '8227', '6537', 'e', '6491', '5463', 'i', '4337', '537']
answer:
44812


question:
['7755', '8383', 'y', 'k', '4869', '2809']
answer:
23816


question:
['f', 'f', 'N', '95', 'G', '8473', 'm', 'A']
answer:

8568