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: ['6585', '5263', '9497', '1117', 'a', 'F', 'w', '6595', '547']

Output: 29604


Input: Consider Input: ['U', '5607', 'Q', 'j', 'I', '3745', '3031']

Output: 12383


Input: Consider Input: ['7087', 'P', 'i', 'e', '4875', 'e', 'F']


Output: 11962