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.

Ex Input:
['1001', 'T', 'w', 'f', 'Q', '4035', 'b', 'q', 'x', 'R']

Ex Output:
5036


Ex Input:
['l', '2511', '2071', 'o', 'F', '7583', '1909', '1859', '3299', '3853', 'h', 'P', 'P', '9175', 'B', 'F']

Ex Output:
32260


Ex Input:
['3469', '9281', '4455']

Ex Output:

17205