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: ['z', '447', '9781', 'R', '6083', 'u', '9229', 'Z', 'F', '2437', '9677', 'n', 'G', '6763', '5883', 'B', '9563', '4575']

Output: 64438


Input: Consider Input: ['9509', 'o', 'l', '9873', 'h', 'N', '2059', '8595', 'D', 'L', '5913', 'o', '1443', 'C', 'y', 'K', 'J', 'a', 'X', 'E']

Output: 37392


Input: Consider Input: ['k', '8925', '9751', '2827', 'R', 'r', 'c', '8665', 'M', '1941', '7843', 'D', 's', '3977']


Output: 43929