A sum of money can buy 60 desks or 80 chairs. How many sets can be bought if one desk is matched with two chairs?
一笔钱，可以买60张课桌或80把椅子．如果一张课桌配两把椅子，可以买多少套？
<gadget id="calculator">4 + 6</gadget>
<output>10</output>

<gadget id="calculator">80 / 10</gadget>
<output>8</output>

<gadget id="calculator">8 * 3</gadget>
<output>24</output>

<result>24</result>