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

Output: 22172


Input: Consider Input: ['4463', '489']

Output: 4952


Input: Consider Input: ['5815', '9839', 's', 'B', 'B', 'q', 'h', '273', 'I', 'O', '607', '7437', '3535', '4533', 'S', 'a', '9529', '6113', 'v']


Output: 47681