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: ['6165', 'x', 'u', 'n', 'V', 'B', '4039', 'l', '991', 'x', '335', '9011', 'K', '8725', 'a', '6291', 'j']

Output: 35557


Input: Consider Input: ['8109', '6811', 'f', 'l', '5869', 'm', '4657', 'y', 'P', '7983', 'o', 's', 'i', 'm', '2141', '4497']

Output: 40067


Input: Consider Input: ['G', 'M', '367', '61', 'g']


Output: 428