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:
['K', 'p', '97', 'R', '2999', 'u', '7307', '6033', '6431', 'm', 'T']
answer:
22867


question:
['N', 'e', '4283', '3243', '5581', '1407', 'q', 'y', '6685', 'v', 'c', '5995']
answer:
27194


question:
['J', '3689', 'S', 'F']
answer:

3689