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.

Example Input: ['v', '4119', 'I', '475', 'd', 'L', '909', 'F', 'V', '775', 'k', 'A', '9411', '8383', 'W', '1521', 'z', 'j', '7057', 'I']
Example Output: 32650

Example Input: ['2215', '4369', 'e', '4979', '4069', 'J', 'L', '789', 'w', 'p', '9533', '8523', '2531']
Example Output: 37008

Example Input: ['181', '1503', '7645', '5947', '7089', 'W', '6375', '7599', 'G', 'z', 'z', '763', 'M']
Example Output:
37102