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: ['z', '9173', 's', '8937', 'h', '1881', '7929', 'b', '2441']

Output: 30361


Input: Consider Input: ['p', '4689']

Output: 4689


Input: Consider Input: ['8039', 'U', '8099', 'g', 'X']


Output: 16138