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: ['3319', 'e', 'c', 'G', '2399', '1557', '4813', 'z', 'U', '4895', 's', '1193', 'A', 'G']

Output: 18176


Input: Consider Input: ['t', 'Q', '5189', 'g', 'c', '4685', '5309', 'W', '6729', '2843']

Output: 24755


Input: Consider Input: ['k', 'W', 'Q', 'Q', '577', '7267', '3335', 'A']


Output: 11179