def test_large_decimal(self):
     self.assertEqual(gange(1000000.05, 999999.55), 999999599999.9775)
 def test_large_positive_negative(self):
     self.assertEqual(gange(47056,-27000), -1270512000)
 def test_large_numbers(self):
     self.assertEqual(gange(976426,2023574), 1975870266524)
 def test_decimal(self):
     self.assertEqual(gange(10.5,77.2), 810.6)
 def test_negative_positive(self):
     self.assertEqual(gange(-40,45), -1800)
 def test_positive_positive(self):
     self.assertEqual(gange(10,10), 100)