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.

['211', '7561', '8725', '6139', 'I', '6585', '4231', 't', '2983', 'T', 'S', '9569', 'R', 'b', 'N', 'X', '9009']
55013

['6121', 'S', '8683', 'Y', '6107', 'B', '6193', '5555', '365', '945', '1439', '7257', 'g']
42665

['i', '5831', '2745', '413', '1513', '5489', 'n', '3001', '3201', 'X', '9321', '3909', '4999', 'r']

40422