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: ['G', 'e', 'R', '4427', '3401', '3065', 'I', '2781', '6829', '5261']

Output: 25764


Input: Consider Input: ['8109', '5635', 'u', 'M', '1009']

Output: 14753


Input: Consider Input: ['2275', '4057', '2645', '2865', '2681', '4065', 'd', 'Y', '2155', 'l', '4151', 'l', 'r', '5353', 'V', '3001', 'n', 'd', '6673']


Output: 39921