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: ['Z', '4157', '5185', 'U', 'i', '1115', 'A', '7427', '3313', 'S']

Output: 21197


Input: Consider Input: ['x', '5259', 'T', 'L', 'C', 'H', '2493', 'u', '3851', '2439', 'U']

Output: 14042


Input: Consider Input: ['B', 'R', 'G', '9235', '5597', 'E', 'j']


Output: 14832