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?
Bryan bought a total of 750 + 250 = 
<gadget id="calculator">750+250</gadget>
<output>1_000</output>
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 = 
<gadget id="calculator">1000/1000</gadget>
<output>1</output>
1 liter.
Therefore, Bryan bought a total of 2 + 1 = 
<gadget id="calculator">2+1</gadget>
<output>3</output>
3 liters of milk.

<result>3</result>