It takes 12 minutes to saw a log into 4 sections, how many minutes will it take to saw this log into 8 sections?
把一根圆木锯成4段需要12分钟，那么，如果把这根圆木锯成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>