It costs 7,200 yuan to buy a computer, which is 80 yuan less than twice that of an air conditioner. How much is it to buy an air conditioner?
买一台电脑需要7200元，比买一台空调的2倍少80元，买一台空调多少元？
<gadget id="calculator">7_200 + 80</gadget>
<output>7_280</output>

<gadget id="calculator">7_280 / 2</gadget>
<output>3_640</output>

<result>3_640</result>