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:
['7411', 'Y', 'x', 'l', '4119', '7241']
answer:
18771


question:
['1001', 'T', 'w', 'f', 'Q', '4035', 'b', 'q', 'x', 'R']
answer:
5036


question:
['43', '401', 'J', '165', 'S', '1105', 'v', '1565']
answer:

3279