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.
['9211', 'b', '2305', 'z', '4073', 'j', '7153', '7465', 'G', 'z', 'T', '5585', 'p', 'G', '8061', 'i', 'Q']