It took Xiao Ming's father 12 minutes to saw a piece of wood into 4 sections. How many minutes would it take him to saw another same piece of wood into 8 sections at the same speed?
小明的爸爸把一根木条锯成4段用了12分钟，他用同样的速度把另一根同样的木条锯成8段，要用多少分钟．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

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

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

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

<result>28</result>