Solution:
1. Given:
- 1 liter = 1000 milliliters
- 23 milliliters to convert
2. Use the conversion formula:
- The number of liters = \frac{\text{milliliters}}{1000}
3. Calculate:
- \frac{23}{1000} = 0.023
4. Hence, 23 milliliters is equal to 0.023 liters.