conversations.from: human
conversations.value: Provide a step by step solution for the following math problem: Bryan bought three different bottles of milk. The bottles contain the following volumes of milk: 2 liters, 750 milliliters, 250 milliliters. How many liters of milk did Bryan buy in total?
conversations.from: assistant
conversations.value: Bryan bought a total of 750 + 250 = 1000 milliliters of milk from the two smaller bottles.
  Since 1 liter is equal to 1000 milliliters, then 1000 milliliters is equal to 1000/1000 = 1 liter.
  Therefore, Bryan bought a total of 2 + 1 = 3 liters of milk.