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: ['3433', '6955', 'Q', 'E', '3557', 'S', '2931', '9879', 'S', 'f', 'Q']

Output: 26755

Input: Consider Input: ['4201', '6445', '4009', 'q']

Output: 14655

Input: Consider Input: ['3307', 'o', '9549', '2987', '8167', 'g', '8361', '1955', '5763', '3519', '4949', 'w', '153', '3917', '6087', '8277']
Output: 66991