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: ['d', '6851', 'o', '5521', 'l', '3911', 'w', '1005', 'e', '3323', 'r', '7311', '4377']

Output: 32299


Input: Consider Input: ['4701', 'b', 'i', 'B', 'z', '7837', 'W']

Output: 12538


Input: Consider Input: ['w', '2281', '8651', '2203', 'q', 'n', '4253']


Output: 17388