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: ['3877', '2685', 'f', 'r', 'q', 'o', 'k', 'i', '2299', '9075', 'X', '4303', '7379', '9205', 'V', '9655', 's']

Output: 48478


Input: Consider Input: ['o', '6815', '4239', 'k', '2725', '6907', 'l', 'Q', 'L', '6393', 'm', '5189', 'q', '2703', '6901', '3645']


Output: 45517