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: ['d', '5571', '6455', '4287', 'I', 'U', 'M', '8303', '8893']

Output: 33509


Input: Consider Input: ['6121', 'S', '8683', 'Y', '6107', 'B', '6193', '5555', '365', '945', '1439', '7257', 'g']

Output: 42665


Input: Consider Input: ['s', 'X', 'F', '2385', '7417', 'E', '3787', 'j', '651']


Output: 14240