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:
['3013', '3955', 'f', '1183', '5111', '9509', '2351', '7087', 'f']
answer:
32209


question:
['w', '8035', 'J', '2671', '7509', '1573', '6915', '8569', '345', 'T', 'P', 's', '1341', '7823', '8671', 'm', 'Q', 's', 'N']
answer:
53452


question:
['5497', '8051', 'c', '8517', 'v', '3423']
answer:

25488