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:
['4509', '4165', '8651', '8057', 'a', '2241', 't', 'i', 'q', 'S', '5149', 'J', 'j', '1373', 'W', 'X', '235', 'm', '3225']
answer:
37605


question:
['i', 'C', '5373', '2017', 'm', '5435', 'Y', 'h']
answer:
12825


question:
['1353', 'A', 'o', '8335', '6929']
answer:

16617