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: ['j', 'A', 'L', 'i', 'I', '3827', '8245', 'H', 'J', '8117', 'w', '4659', 'Y', 'x', 'K']

Output: 24848


Input: Consider Input: ['K', '4403', 'a', '3881', '4139', 'w', '1861', 'G']

Output: 14284


Input: Consider Input: ['M', 'm', '1831', '5735', 'y', 'r', 'o']


Output: 7566