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: ['7763', '6003', 'V']

Output: 13766


Input: Consider Input: ['2691', '3861', '7087', '4661', '6527']

Output: 24827


Input: Consider Input: ['2775', '7405', 'F', 'D', '9025', '827', 'e', 'j', 's', 'e', 'Q', '1137', 'G']


Output: 21169