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.

['9401', 'w', 'b', '8287', 'n', 'O', 'H', 'h', '45', '2337']
20070

['q', 'Y', '6021', '4045']
10066

['6971', '5421', '7105', 'y', '1787', 'I', 'B', 'W', '2593', '1497', '4275', '3385', '5065', '1693']

39792