★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 8 sections?
★把一段木头锯成4段用了12分钟，照这样计算，锯成8段，需要多少分钟？
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

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

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">4 * 7</gadget>
<output>28</output>

<result>28</result>