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', 's']
0

['j', 'f', '3831', 'B', 'D']
3831

['9579', 'N', '9373', 'Z', '2221', 'e', '8179', 'U', 'O', 'Z', 'Q', 'r', '9561', 'J', '2215', 'S']

41128