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: ['9125', '1443', '2303', 'O', '8463', '401', '3983', 'g', '4327', 'z', 'n', 'F', 'Q', 'j', '9885']
Example Output: 39930

Example Input: ['4389', '8535', 'D', '6063', 'z', 'r', 'w', '5725', '291', 'a', '9059', '569', '2943', 'W']
Example Output: 37574

Example Input: ['J', 'e', 'F', '8169', '1773', 'n', '9255', 'H', '8521', 'c', '353', '5391', '8243', 'Y']
Example Output:
41705