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: ['4389', '8535', 'D', '6063', 'z', 'r', 'w', '5725', '291', 'a', '9059', '569', '2943', 'W']

Answer: 37574


Question: ['5749', 'l', '3297', '8913', '4625', 'M', 'X', 'g', '3143', 'i', '8369', '6101', 'w', '3683', '3891', '1399', '9105', '6923', 'K']

Answer: 65198


Question: ['3027', 'G', '6777', '5133', '1627', 'Y', '8425', '2245', 'x', '4457', '1871', '6789', 'p', '9635', 'v', '9645']

Answer:
59631