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.

['b', '5689', '119', 'p', 'P', 'J', 'w', 'm', '7397', 'Y', '447', 'O', 'p', '319', 'H', 'U']
13971

['4997', '5005', '6773', 'q', 'K', '8391', '7303', 'K', 'N', '5417', '8573', 'z', '8653', '8343', 'm', 'L', '1587', 'p', '5323']
70365

['641', 'E', 'k', '5761', '8231', 'r', '4395', 'h', 'O', 'G', 'g']

19028