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: ['5331', 'f', '2865', '6019', 'U', 'm', 'g', 'n', 'Y', 'A']

Output: 14215


Input: Consider Input: ['543', '8351', 'I', 'M', '6647', '731', 'b', 'r', 'l', '3935', 'k', 'z', 'v', '2131', '7781', 'X', '9419', '5013', 'F']

Output: 44551


Input: Consider Input: ['7981', '1315', 'y', '3657', '215', '4883']


Output: 18051