To convert teaspoons to cups, you can use the conversion factor that 1 cup equals 48 teaspoons.
To convert 18.75 teaspoons to cups:
\[ \text{Cups} = \frac{\text{Teaspoons}}{48} = \frac{18.75}{48} \approx 0.390625 \]
So, 18.75 teaspoons is approximately 0.39 cups, or about 0.39 cups if you want to round it to two decimal places.