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

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

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

<gadget id="calculator">6 * 9</gadget>
<output>54</output>

<result>54</result>