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

Output: 21315


Input: Consider Input: ['f', '6703', 'c', 'c', 'l', '2511', '6507', 'b', '9727', 'l', '1251', 'I', '5231', '91', 'L', 'M', 'd']

Output: 32021


Input: Consider Input: ['9589', 'T', 'I', '2011', 'U', '2955', '8819', '6019', '5449', 'O', 'L', '9435', 'l', '6689', 'O']


Output: 50966