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: ['4201', '6445', '4009', 'q']

Output: 14655


Input: Consider Input: ['l', '2511', '2071', 'o', 'F', '7583', '1909', '1859', '3299', '3853', 'h', 'P', 'P', '9175', 'B', 'F']

Output: 32260


Input: Consider Input: ['n', '661', 'Z', 'w', 'X', 'U']


Output: 661