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

['o', 'J', 'B', '7765', '7781', '5513', '8721', 'u', '9557', 'C', 'A', '1281', '6565', 'H', '5559', '1695', '7577']
62014

['s', '6315', '4133', '1569', 'Q', 'e', '5807', 'u', '6319', 'U', 'T', '5695', 'N', '2097']

31935