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: ['Y', '263', '641', '1163', 'p', 'r', 'L', '4425', 'C', '7585']

Output: 14077


Input: Consider Input: ['i', 'w', '8117', '2823', 'C', 'x', 'w', '5959', 'g', 'e', 'L', 'V', 'i', 'w', 'n']

Output: 16899


Input: Consider Input: ['P', '5307', '2335']


Output: 7642