The cost of a gallon milk is $3.89. Calculate the cost of 25 Liters milk.

Before you can make any monetary calculations, you must convert the units from gallons to liters:

3.785 liters = 1 gallon

Therefore, 25 liters equals to 6.604 gallons.

Next, you simply multiply to find the cost:

6.604*3.89 = 25.70

The cost of 25 liters of milk is $25.70.