A piece of wood is 15 meters long, and it needs to be divided into 5 sections on average. It takes 6 minutes to saw each section. How much does it cost to finish sawing?
一根木头长15米，要把它平均分成5段，每段锯下需6分钟，锯完一共要花多少
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>