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: ['6815', 'A', '1055', '4687', '8675', '4615', 'a', '2127', 'w', 'l', 'J', '5025', 'c', 't', '9727', 'G', '8431']

Output: 51157


Input: Consider Input: ['w', '1335', 'G', 'h', '6729', '1999', 'u', 'I', 'r', 'm', '4757', 'W', '3715', '701', '1999']

Output: 21235


Input: Consider Input: ['q', '7401', 'm', '9541', '1431', '6155', '5525', '2187', '3935', '3579', '8227', 't', 'x', 'n', 'm', 'j', 'k', '7339', '3693', 'j']


Output: 59013