There is a small rope 12 centimeters long. Xiaofang cuts it twice, and the average length of each piece is how many centimeters.
有一根12厘米长的小绳子，小方剪了两刀，平均每段长多少厘米．
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<result>4</result>