To convert pints to gallons, you can use the conversion factor that 1 gallon is equal to 8 pints.
So, to convert 312 pints to gallons, you divide by 8:
\[ \text{Gallons} = \frac{312 \text{ pints}}{8 \text{ pints/gallon}} = 39 \text{ gallons} \]
Therefore, 312 pints/week is equal to 39 gallons/week.