A 4-meter-long piece of wood is divided into 8 sections on average, and each section takes 4 minutes. How many minutes does it take in total?
把一根4米长的木料平均分成8段，每截一段需要4分钟，一共需要多少分钟．
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

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

<result>28</result>