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', 'M', 'U', '5383']

Output: 5383


Input: Consider Input: ['6161', 'p', '2839', 'c', '5905', '1729', 'j', '5901', '3013', 'e']

Output: 25548


Input: Consider Input: ['G', '4635', 'g', '3373', '4945', '5053', 't', '4093', 'P', 'h']


Output: 22099