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: ['O', 'K', 's', 'V', '6815', 'c', '9277', 'V', '1783', 'b', 'i', '2045', 'E', 'E', '2035']
Example Output: 21955

Example Input: ['a', 'm', '3205', '1869', '1117', 'K', '5785']
Example Output: 11976

Example Input: ['4697', '9593', '675', 'h', '5875', '7711', '4863', 'f', '9017', 'm', '8765', 'W', 'Q', '2039', 'Z', '5501']
Example Output:
58736