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: ['7087', 'P', 'i', 'e', '4875', 'e', 'F']

Output: 11962


Input: Consider Input: ['T', '721', '6555', 'g', 'y', 'U', '3053', 'A', '9663']

Output: 19992


Input: Consider Input: ['v', 'k', '4029', 'a', 'P', 'v', 't', '5703', '4913', 'i', '8301', '7885', 'A', '1091', 'v', '1423', '5961', 'W']


Output: 39306