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.

['D', '1611', 'w', '8825', '8987', '3021', '9019', 's', '87', '9283', '5717', 'f', '1503', '6593', '8533', '785', 'g']
63964

['1845', '273', '6921', 'u', '165', 'n', 'y', 'I', 'u', 'X', '5503', 'L', 'G', 'V', '6223', '1123', 'v']
22053

['4231', 'i', 'u', 'v']

4231