If a piece of wood is sawed into 5 sections, it takes 8 minutes. How many minutes will it take to cut into 12 segments?
一根木头如果锯成5段，需要8分钟．如果锯成12段，需要多少分钟．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">12 - 1</gadget>
<output>11</output>

<gadget id="calculator">2 * 11</gadget>
<output>22</output>

<result>22</result>