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: ['u', 'e', 'P', 'D', '255', '2573', 'E', 'P', 's', '3725', '3391', 'I', '5323', '885']

Output: 16152


Input: Consider Input: ['x', '5259', 'T', 'L', 'C', 'H', '2493', 'u', '3851', '2439', 'U']

Output: 14042


Input: Consider Input: ['m', '101', '3003', 't', 'h', 't', '7721', 'u', '1069', '2623', 'M']


Output: 14517