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: ['6907', '9123', 'L', '8871', 'q', 'C', 'U', '7403', 'F', '3827', '3951', '8879', '2865', 'x', '6175', 'T', '1147']

Answer: 59148


Question: ['P', 'd', '9401', '7043', 'f', 'h', 'q', 'u', 'c', 'q', 'k', '4297', '8201', '3243', '225', 'C', 'm', 'N']

Answer:
32410