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: ['A', 'S', 'c', 'I', 'M', 'P', '8739', '879', '1401', '3941', '4061', 'q', 'P', '2805', '4473']

Output: 26299


Input: Consider Input: ['Q', '8317', '8989']

Output: 17306


Input: Consider Input: ['705', 'i', 'h', '3929', 'W', 'W', '8669', '6633', '6351', 'L', 'j', 'b', 'D']


Output: 26287