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: ['z', 'U', '6817', 's', '3731', 'M', 'I', '1095', 'l', '5993', '5207', 'e', 'L', '5361', 'v', 'g', '1963', '4829', '9541', '8261']

Output: 52798


Input: Consider Input: ['4161', 'E']

Output: 4161


Input: Consider Input: ['687', 'P', '5011', 'E', '2883', 'r', '1443', 'w', 'Q', '5323', '9609', 'F']


Output: 24956