It takes 12 minutes to saw a piece of wood of uniform thickness into 3 sections. According to this calculation, how many minutes will it take to saw this piece of wood into 5 sections.
一根粗细均匀的木料锯成3段用12分钟，照这样计算，把这根木料锯成5段，要用多少分钟．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

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

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>