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: ['K', 'p', '97', 'R', '2999', 'u', '7307', '6033', '6431', 'm', 'T']

Output: 22867


Input: Consider Input: ['V', '8137', 'b', 'k', '2081', 'L', '9733', '7525', 'D', '2381', 'O']

Output: 29857


Input: Consider Input: ['1369', '7959', 't', '6557', 'c', 'K', 'W', '8565', '361', 'D', '1521', '5059', 'q']


Output: 31391