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.

['3451', '2325', '2511', 'i', '6159', '2291', 'e', 'l', 'P', '1177', 'o', 'T']
17914

['W', '3629', '6053', '1035', '1717', 'n', 'y', '9585', 'D', '5125', 's', '9801', '2905', 'E', '5797', 'T']
45647

['7129', 'x', 'b', 'r', '9695', '939', 'u', 'G', '6259']

24022