RT-Mart Supermarket's "Dianqing" promotion, "Bright Milk" is sold at half price. Originally, 600 yuan can buy 10 boxes, but now 600 yuan can buy as many boxes.
大润发超市"店庆"搞促销，"光明牛奶"降半价销售，原来600元可以购买10箱，现在600元可以购买多少箱．
<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<result>20</result>