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:
['4463', '489']
answer:
4952


question:
['z', 'c', 'E', 'Q', '1839', 'g', 'X', 'c', '291', 'c', 'w', 'e', '5957', 'X', '6471', 'A', '8359', 'y', '3611', '5417']
answer:
31945


question:
['5447', '1107', '8813', 'd', 'k', '2143', 'P', '1289', 'y', 'F', 'T', '8699', '4299']
answer:

31797