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: ['5347', 'E', 'a', '5379', '405', '1171', 'v', 'J']

Output: 12302


Input: Consider Input: ['4509', '4165', '8651', '8057', 'a', '2241', 't', 'i', 'q', 'S', '5149', 'J', 'j', '1373', 'W', 'X', '235', 'm', '3225']

Output: 37605


Input: Consider Input: ['s', 'p', '9707', '6747', '2271', '9083', '3055']


Output: 30863