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:
['Y', '263', '641', '1163', 'p', 'r', 'L', '4425', 'C', '7585']
answer:
14077


question:
['m', 'J', '7617', 'm', '935', 'L', 'n', '7503', 'r', '1345', 'i', '6609', 'G', '3787', '309', '8365', 'x', 'i', 'i', '2043']
answer:

38513