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:
['6723', '1', '6357', '1497', 'A', 'p', 'N', 'T']
answer:
14578


question:
['9509', 'o', 'l', '9873', 'h', 'N', '2059', '8595', 'D', 'L', '5913', 'o', '1443', 'C', 'y', 'K', 'J', 'a', 'X', 'E']
answer:
37392


question:
['1305', '1673', 'w']
answer:

2978