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:
['w', '8035', 'J', '2671', '7509', '1573', '6915', '8569', '345', 'T', 'P', 's', '1341', '7823', '8671', 'm', 'Q', 's', 'N']
answer:
53452


question:
['u', 'W', '1561', '9243', '4923', '9385']
answer:
25112


question:
['3077', '9431', '1267', 'Q', 'n', '1291', '7335', '5331', 'Z', 'T', 'R', 'W', '3993', '2819', '2133', '4461', '111']
answer:

41249