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: ['7361', '3605', 'V', '2039', '9665', 'X', 'b', '1195', '657', '6509', '7195', '2013', '1847', 'v', '9499', '1761']

Output: 53346


Input: Consider Input: ['8203', '481', 'E', 'o', '1783', 'a', '7879', '4319', 'K', 'h', '3643', '7955', '7257', '7533', 'Y', 'Y']


Output: 49053