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: ['7361', '3605', 'V', '2039', '9665', 'X', 'b', '1195', '657', '6509', '7195', '2013', '1847', 'v', '9499', '1761']
Example Output: 53346

Example Input: ['x', 'V', 'g', '5469', 'c', '7873', 'T', 'p', '8109', '5395', 'h', 'z', 'T', '9373']
Example Output: 36219

Example Input: ['9533', 'N', '89', 'F', 'S', 'Q', 'B', '759', '4231', 'p', 'A', '6791', 'K']
Example Output:
21403