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

['C', '9973', 'b', '693', 'y', 'H', 'C', 'P', 'b', 'J', 'f', 'T', '2317', 'O', '5755', '8201', 'p', 'y', '8721', 'i']
35660

['8717', '5437', 'l', '8573', 'r', 'k', 'B', 'w', '4123', '4471', '5169', 'D', '3975', '6581', 'z', '41', 'X', '5057', 'i', '8153']

60297