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: ['q', 'Y', '6021', '4045']

Output: 10066


Input: Consider Input: ['R', '3361', 'c', 'S', 'g', '3829', '7347', '6633', 'e', '9227']

Output: 30397


Input: Consider Input: ['f', 'o', '4997', '1183', 'a', 'm', '7627', '5971', 'e', '4963']


Output: 24741