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: ['1305', '1673', 'w']

Output: 2978


Input: Consider Input: ['q', '5151', 'R', '441']

Output: 5592


Input: Consider Input: ['6097', '4613', '8269', '3707', '2357', 'm', '8653']


Output: 33696