 
 <translate> A gallon is 1 * 128 = 128 ounces. So he needs to buy 128 / 16 = 8 of the small bottles. That would cost 8 * 3 = 24 dollars. So he saves 24 - 8 = $16.
The answer: 16. <hau> Galon yana da 1 * 128 = 128 ounces. Don haka yana bukatar ya sayi 128 / 16 = 8 na kananan kwalabe. Wannan zai biya 8 * 3 = 24 daloli. Don haka ya ajiye 24 - 8 = $16. Amsar ita ce: 16. 