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:
['u', 'e', 'P', 'D', '255', '2573', 'E', 'P', 's', '3725', '3391', 'I', '5323', '885']
answer:
16152


question:
['2975', '33', '2845', '4695', 'j', '607', 'e', 'z', '6339', '1899', 'q', 'O']
answer:
19393


question:
['u', '4705', 'F', 'a', '3305', 'V', '83', 'L', '5231', '7967']
answer:

21291