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: ['5021', 'q', '4109', 'g', 'w', 'C', 'w', '239', 'N', '9755', '8591', '7083', 'Q', '7907', 'w', 'U', 'a', '4901', 'k', 'G']

Output: 47606


Input: Consider Input: ['5573', '6221', 'C', '8649', '6603', 'q', '9403']

Output: 36449


Input: Consider Input: ['O', 'j', '5689', '7003', '5703', '4439', '9573', 'b', 'P', 'T', '8331', '255', '2837', 'B', 'g']


Output: 43830