If 3 corns are exchanged for 2 bunches of grapes, and 6 bunches of grapes are exchanged for 4 apples, how many corns are exchanged for 8 apples?
如果3个玉米换2串葡萄，6串葡萄换4个苹果，那么8个苹果换多少个玉米．
<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) * (3/2) * 8</gadget>
<output>18</output>

<result>18</result>