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


question:
['U', '5885', 'u', 'Y', 's', 'w', 'j', '9629', '9505', 'U']
answer:
25019


question:
['5805', 'h', 'V', 'v', '4365', '3185', '7377', '3977', '469', 'I', 'B', 'y']
answer:

25178