In the experiment of keeping the bamboo pole in balance, how many chess pieces should be placed on the scale 3 on the left side, and how many chess pieces should be placed on the scale 6 on the right side to make the bamboo pole balanced.
在竹杆保持平衡的实验中，左边在刻度3上放4个棋子，右边在刻度6上应放多少个棋子才能使竹竿平衡．
<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<gadget id="calculator">12 / 6</gadget>
<output>2</output>

<result>2</result>