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:
['D', '5207', 'E', '119', 'g', '2991', 'G', 'g', 'u']
answer:
8317


question:
['6551', 'm', '3941', 'F', 'K', 'u', '7981', '9581', 'X', 'M', 'N', 'e', 'G', 'i']
answer:
28054


question:
['737', 'j', '3279', 'M', '9005', 'O', '2203', 'K', 'l', 'P', '3215', 'Y']
answer:

18439