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:
['n', 'm', 'Y', 'v']
answer:
0


question:
['2775', '7405', 'F', 'D', '9025', '827', 'e', 'j', 's', 'e', 'Q', '1137', 'G']
answer:
21169


question:
['S', '765', 'E', '7983', 'j', 'P', 'u', 'K', 'S', '3185', '9807', '271', '9975']
answer:

31986