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.

['6849', 'I', 'p', 's', 'L', '4757', 'j', 'x', 'm', 'P', '5237', '1105', '9015', '9279', 'Q']
36242

['k', '4991', '7289', '4355', 'I', '8415', '5175', '5329', 'G', 'a', '7193', 't', '8821', 'j', '7239', '405', 'y', 'O', '9881', 'w']
69093

['2279', 'y', '8147', 't', 'A', 'C', 'z', '189', 's', '7913']

18528