A piece of wood is 15 meters long, and it needs to be divided into 5 sections on average. It takes 8 minutes to saw each section. How many minutes will it take to finish sawing.
一根木头长15米，要把它平均分成5段，每锯下一段需8分钟，锯完一共要花多少分钟．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">4 * 8</gadget>
<output>32</output>

<result>32</result>