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: ['9869', '7701', 'H', 'o', 'v', '1431', 'O', 'L']

Output: 19001


Input: Consider Input: ['6321', 'M', 'd', '3673']

Output: 9994


Input: Consider Input: ['q', '8277', 'B', 'A', '6075', 'c', 'W', '149', '225', 'E', 'p', 'g', '2091']


Output: 16817