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: ['6867', 'x', '8481', '5091', '979', 'a', 'S', 'i', 'd', '1591']

Output: 23009


Input: Consider Input: ['a', 'q', '4085', '6327', '6869', 'Z', 't', '7057', '1965', 'p', 'o']

Output: 26303


Input: Consider Input: ['h', 'i', 'I', '3965', '5959', '681', 'j']


Output: 10605