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: ['c', 'd']

Output: 0


Input: Consider Input: ['4401', 'p', 'V', 'l', 'H', '7329', 's', '4717', 'l', '1773', '67', '179', 'l', '6991', 'a', '9377']

Output: 34834


Input: Consider Input: ['d', 'A', '9551', '8751', '3005', '6873', 'A', '1639', 'i', 'Z', 'F', 'v', 'O', 'o', '81', '2041', '4845']


Output: 36786