It took 12 minutes to saw a piece of wood into 4 sections. According to this calculation, how many minutes will it take to saw it into 6 sections?
把一根木料锯成4段用了12分钟，照这样计算，锯成6段用多少分钟．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

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

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

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<result>20</result>