def test_with_two_digit_input(self):
     self.assertEqual(seven(35), (35, 0))
 def test_with_medium_inputs(self):
     self.assertEqual(seven(371), (35, 1))
     self.assertEqual(seven(1603), (7, 2))
 def test_with_large_inputs(self):
     self.assertEqual(seven(477557101), (28, 7))