They need to buy 180/30=<<180/30=6>>6 boxes

So the cost is 6*40=$<<6*40=240>>240

# Answer

240
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A convenience store sells 180  gallons of soda a week.  They buy syrup boxes that can make 30 gallons of soda, and each box costs $40.  How much do they pay for syrup a week?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
240
A convenience store sells 180  gallons of soda a week.  They buy syrup boxes that can make 30 gallons of soda, and each box costs $40.  How much do they pay for syrup a week?
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