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:
['3121', 'j']
answer:
3121


question:
['2577', 'B', '3059', 'S', 'l', 'T', 'Q', 'x', 'f', 'l', 'y']
answer:
5636


question:
['9213', '5883', '4251', '6697', 'K', 'S', '1297', 'K', 'a', '9239', 'm', '4967', '9743', 'J', 'o', 'y', '9861', 'D', 'e', 'u']
answer:

61151