A piece of wood is 12 meters long, and it should be divided into 6 equal parts. It takes 5 minutes to saw the next section, how many minutes will it take to complete the saw.
一根木头长12米，要把它平均分成6段．每锯下一段需要5分钟，锯完一共要多少分钟．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<result>25</result>