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:
['8353', 'f', '1799', '6985', '2975', 'J', '9105', 'f', 'v', 'C', 'V', '9327', '3015', 'e', 'h', '439', '4969', 'c']
answer:
46967


question:
['135', 'a', 'X', '8067', '8447', '4009', '4221', 'o', 'A', 'x']
answer:
24879


question:
['f', '4387', 'S', 'a', '6551', '6345', '1935', 'x', '8953', '3955', '1139', 'e', '9445', '3953', '1145', 'v']
answer:

47808