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: ['u', 'e', 'P', 'D', '255', '2573', 'E', 'P', 's', '3725', '3391', 'I', '5323', '885']

Output: 16152


Input: Consider Input: ['m', 'e', 'W', 'N', '4459', '693', '3765', '2641']

Output: 11558


Input: Consider Input: ['M', 'S', 'l', '5601', '9011', 's', '6479', 'B', '815', '8761', 'C', '5181', '7797', 'D', '4693']


Output: 48338