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.

['h', '1157', 'm', '8975', '6165', '7491', '1855', '3489', '9629', '631', '9641']
49033

['5021', 'q', '4109', 'g', 'w', 'C', 'w', '239', 'N', '9755', '8591', '7083', 'Q', '7907', 'w', 'U', 'a', '4901', 'k', 'G']
47606

['v', 'W', '8485', 'T', 'Z', 'D', '2311', '5823', '3283']

19902