8,456 milliliters is smaller than 9 liters. 9 liters equals 9000milliliters.To answer this question both values have to be converted to sameunit. Let's convert both to liters.Prefix 'milli' is used to denote sub multiples of liter and usesfactor 0.001. To convert milliliters to liters, value inmilliliters has to be multiplied by factor used with prefix'milli': 8456 milliliters = 8456 * 0.001 = 8.456 liters.After converting both values to same unit we can comparethem:9 liters are greater than 8.456 liters8456 mL < 9L