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: ['s', '9377', '3663', '1375', 'j', 'L', '7943', '1711', '7409', '9115', '1227', 'I', 'U']

Output: 41820


Input: Consider Input: ['a', 'q', '4085', '6327', '6869', 'Z', 't', '7057', '1965', 'p', 'o']

Output: 26303


Input: Consider Input: ['h', 'F', 'J', 'b', '1163', '4061', '13', '7227', 'G', '1337', 'a', 'k', '3601', '5433']


Output: 22835