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: ['q', '6631', 'b', '4207', '7523', '9853', '9203', 'P', '5029', 'b', '2319', '4717', '2485']

Output: 51967


Input: Consider Input: ['D', 'G', '9895', '143', '37', 'S', '1539', 'x', 'a', 'x', 'B', 'i', '9719', '839']

Output: 22172


Input: Consider Input: ['B', '9773', '8299', 'F', '6109', '8141', '7049', '361', 'Z', '1627', '2723']


Output: 44082