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.

['6217', 'A', '1925', 'o', '1433']
9575

['6815', 'A', '1055', '4687', '8675', '4615', 'a', '2127', 'w', 'l', 'J', '5025', 'c', 't', '9727', 'G', '8431']
51157

['y', 'F', '135', '7359', '8579', '6809', '3979', 'H', 'm', '5059', '373', 'Y']

32293