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.
--------
Question: ['6833', 'R', '7323', 'd', '3487', '8777', '9053', 'y', 'i', 'O', '467', 'b', '5969', 'D', 'B', 'r', '3073', 'i', 't', 'd']

Answer: 44982


Question: ['G', 'o', 'g', 'I', 'S', '9193', 'G', 'C', '2481', '435', 'm', '1005', '5605', '6501', 'D']

Answer: 25220


Question: ['u', '7843', 'A', '4559', '7905', '6589', 't', 'y', '5441', 'Q', 'h', 'A', '195', 'V', 'y', 'K', '985']

Answer:
33517