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: ['3071', '355', 'e', '9781', 'R', '6833', 's', '2665', 'L', '9551', 'P', '6101', '2955', '4643', 'O', '3327', '2163', '685', '4277', 'B']

Output: 56407


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

Output: 21235


Input: Consider Input: ['8113', 'G', '2455', '2689', '1269', 'n', 'c', '55', 'o', '3013', '6969']


Output: 24563