It takes 12 minutes to cut a piece of wood into 4 sections. If each section takes the same amount of time, how many minutes will it take to cut it into 9 sections?
一根木材，截成4段要12分钟，如果每截一段的时间相等，那么截成9段需要多少分钟．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

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

<gadget id="calculator">9 - 1</gadget>
<output>8</output>

<gadget id="calculator">4 * 8</gadget>
<output>32</output>

<result>32</result>