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: ['8591', 'J', 'l', 'l', '7023', 'N', 'n']

Output: 15614


Input: Consider Input: ['6293', 'o']

Output: 6293


Input: Consider Input: ['1937', 'C', '9689', '2459', '4051', '7519']


Output: 25655