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: ['h', '1157', 'm', '8975', '6165', '7491', '1855', '3489', '9629', '631', '9641']

Output: 49033


Input: Consider Input: ['6849', 'I', 'p', 's', 'L', '4757', 'j', 'x', 'm', 'P', '5237', '1105', '9015', '9279', 'Q']

Output: 36242


Input: Consider Input: ['r', 'F', 'W', '7979', 'T', '4887', 'p', 'x', 'o', 'y', 'M', 'C', 'M', '5815', '2143', 'a']


Output: 20824