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: ['6723', '1', '6357', '1497', 'A', 'p', 'N', 'T']

Output: 14578


Input: Consider Input: ['3883', 'T', '6175', 'B', '4365', '3719', 'V', 'B', '3173', 'K', 'Z']

Output: 21315


Input: Consider Input: ['1535', 'A', 'K', 'i', '5339', '8035', 'Y', '2919', '5351', 'g', 'r', '8143', 'D', '6073']


Output: 37395