A piece of wood is 6 meters long. It takes 12 minutes to saw it into 5 sections. How many minutes does it take to saw each time?
一根木头长6米，把它锯成5段，用去12分钟，每锯一次花多少分钟．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

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

<result>3</result>