To convert pints to gallons, you can use the conversion factor that 1 gallon is equal to 8 pints.
To convert 72 pints to gallons, you would divide the number of pints by 8:
\[ 72 \text{ pints} \div 8 = 9 \text{ gallons} \]
So, 72 pints is equal to 9 gallons.