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.

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

['191', 'R', 'Q', '7809', '4851', 'b', 'e', 'H', 'E', 'I', 'r', 'A', 'g', 'e', 'g', 'I', 'j', 'f', '7287']
20138

['7549', 'b', '761', '8961', 'I', '5863', 'y', '1611', '1221', '6139', '8585', '2117', 'x', 'r']

42807