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: ['D', 'P', '9951', '2897', 'V', 'C', 'B', 'H', 'c', 'h', '2843', 'a']

Output: 15691


Input: Consider Input: ['3351', '6445', 'Y', '8455', 'V', 'z', 'a', 'V', 'S', '8551', '4101', 'q', '8743', '5999', '7155', '3825', '2241', '9957']

Output: 68823


Input: Consider Input: ['679', '9625', 'N', 'g', 'V', '5057', '7227', '7385', '9955', 'I', 'Q', 'w', '4827', 'y', 'q']


Output: 44755