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.
['T', 'I', '5411', '5565', '9551', '3641', '9203', '3127', '9191', 'Z', 'w', '7585', '3595', '9029', '1357', '7043', '2837', 'A', 'd', '3009']