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: ['P', '6161', 'k', '5925', 'h', 'G', 'n']

Output: 12086


Input: Consider Input: ['9201', '5685', 'v', 'w', 'v', 'r', 'Y', 'm', 'q', 'e', 'P', '7595', 'c', 'W', 'd', '9985', 'V', '3719']

Output: 36185


Input: Consider Input: ['3935', '2675', '7049', 'h', '325', '4751', '7369', 'X', '1911', '1255', '2947', 'l', 'u', 'y', '8197']


Output: 40414