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.

Q: ['i', 'C', '5373', '2017', 'm', '5435', 'Y', 'h']

A: 12825
****
Q: ['6921', 'a', 'U', '2821', '2111', 'h', '3937', '3697', 'd', '6309', 'q', '7961', '5287', '5375', '2721', '4523', 'V', '8633', 'c', '7643']

A: 67939
****
Q: ['6123', 'X', '8475', '3151', 'p', '395', '385', 'A', '4249', 'l', '9515', 'e', '6667', '1369', 'V', '8037', '1397', '6343', 'x', '9009']

A:
65115
****