It takes 6 minutes to cut a piece of wood into 3 sections, so how many minutes will it take to cut it into 5 sections?
一根木头把它截成3段要用6分钟，照这样计算，把它截成5段需要多少分钟．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

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

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

<result>12</result>