If it takes 12 minutes to saw a piece of wood into 3 sections, how many minutes will it take to saw the same piece of wood into 6 sections?
把一根木料锯成3段要12分钟，照这样计算，把同样的一根木料锯成6段要多少分钟．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

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

<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<result>30</result>