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:
['D', '9679', 'e', '5537', 'G', 'l', '2653', 'a', 'Y', '8467', 'q', 'L', '7239', 'O']
answer:
33575


question:
['E', '2839', '4327', 'w', '6841', 'p', '555', '5781', 'X', 's', '3269', '1285', 'y', '4695', 'a', '7193', 'G', '1307']
answer:

38092