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: ['9869', '7701', 'H', 'o', 'v', '1431', 'O', 'L']

Output: 19001


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

Output: 36449


Input: Consider Input: ['9401', 'w', 'b', '8287', 'n', 'O', 'H', 'h', '45', '2337']


Output: 20070