To find the third part of half a liter, you can follow these steps:
1. Start by determining what half of a liter is. Half of a liter is 0.5 liters.
2. Next, calculate the third part of half a liter. To find a third of something, you can divide it by 3. So, to find a third of 0.5 liters, you would divide 0.5 by 3.
3. When you divide 0.5 by 3, you get 0.1667 liters. This is the third part of half a liter.
Therefore, the third part of half a liter is approximately 0.1667 liters.