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.

['1001', 'T', 'w', 'f', 'Q', '4035', 'b', 'q', 'x', 'R']
5036

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

['9405', 'u', '9075', 'w', 'F', 'T', '1467', '6845', 'H', 'Z', '6915', 'A', 'H', '8825', 'I']

42532