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: ['5947', 'n', '9431', '7629', '7643', 'N', '141', '2353', 'l', 'F', '9665', '9489', 'X', '4905', 'H', 'L', '985']

Answer: 58188


Question: ['W', 'O', 'c', 'r', 'E', 'w', '9811', '6421', '3543', '4293', '8255', 't', '229', '745', 'w', 'p', '6861', '5305', 'h']

Answer: 45463


Question: ['p', '2643', '767', 'v', 'L', 'R', '3195', '8655', '6619', 'g', 'h', '7961', 'w', 'c', '2381', '7785', '4243', '6785']

Answer:
51034