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: ['2691', '3861', '7087', '4661', '6527']

Output: 24827


Input: Consider Input: ['n', '6729', 'p', 'D', 'o', '1213', 'e', '6951', '2341', '9997', 'e', 'M', 'x', 'R']

Output: 27231


Input: Consider Input: ['9403', 'l', '3327', '3519', '1827', '8869', 'r', '2395', '8023', 'v', 'j', '7843']


Output: 45206