carrots for 2 big radishes, 9 big radishes for 3 Chinese cabbages. How many carrots are exchanged for 6 Chinese cabbages?
6根胡萝卜换2个大萝卜，9个大萝卜换3棵大白菜．6棵大白菜换多少根胡萝卜？
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 * 9 * 2</gadget>
<output>54</output>

<result>54</result>