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:
['4685', 'q', 'O', 'o', '3453', 'o', 'Y', 'C', 'a', 'i', '7283', 'J', 'n', 'Q', 'i']
answer:
15421


question:
['5749', 'l', '3297', '8913', '4625', 'M', 'X', 'g', '3143', 'i', '8369', '6101', 'w', '3683', '3891', '1399', '9105', '6923', 'K']
answer:
65198


question:
['565', 'L', 'A', '6681', 'x', 'd', 'p', 'r', 'w', 'k', 'F', 's', '753', '2447', '4361', '5531', 'u', '5801', '23']
answer:

26162