A gallon is 1*128=<<1*128=128>>128 ounces

So he needs to buy 128/16=<<128/16=8>>8 of the small bottles

That would cost 8*3=<<8*3=24>>24 dollars

So he saves 24-8=$<<24-8=16>>16

# Answer

16
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Jim decides to buy mayo in bulk.  He can buy 1 gallon of mayo at Costco for 8 dollars.  At the normal store, a 16-ounce bottle costs $3.  How much money does he save by buying the gallon container?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
16
Jim decides to buy mayo in bulk.  He can buy 1 gallon of mayo at Costco for 8 dollars.  At the normal store, a 16-ounce bottle costs $3.  How much money does he save by buying the gallon container?
train