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: ['57', '9977', '2657', 'p', '9573', '7745', '4755', 'U']

Output: 34764


Input: Consider Input: ['1057', '3937']

Output: 4994


Input: Consider Input: ['q', '3301', '6721', '1633']


Output: 11655