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.

Input: Consider Input: ['2013', 'S', 's', '9353', 'b', 'u', '6687', '5429', '3545', '7269']

Output: 34296


Input: Consider Input: ['6645', 'k', '4879', 'N', '113', 'L', 'x', '8365', 'v', 'A']

Output: 20002


Input: Consider Input: ['9455', '363', '367', '2049', 'B', '9559', '8859', 'u', 'W']


Output: 30652