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: ['6293', 'o']

Output: 6293


Input: Consider Input: ['4601', '6021', '3005', 'I', 'f', '4631', 'Q', 'd', '8041', 'D', '8067', '7383', '757', 't', 'd', 'n', '2275', 'p', 'm', '6021']

Output: 50802


Input: Consider Input: ['7063', '3985', 'x', 'Q', 'c', 'g']


Output: 11048