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:
['e', '6633', '131', '7459', '3733']
answer:
17956


question:
['6669', 'n', 't', 'N', 'x', '8153', 'W', 'v', 'B', '3181', 'y', 'e', '3491']
answer:
21494


question:
['2159', '391', '4105', 'B', 'O', '1853', '9623', 'c', '1101', '6695', 'h', 'U', 'F', '4149']
answer:

30076