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

Output: 24755


Input: Consider Input: ['1671', 'H', '9271']

Output: 10942


Input: Consider Input: ['i', '7491', '6221', '7511', 'O', 'F', '5675', '4591', '7169', 'v', 'm', 'V', 'M']


Output: 38658