It takes 8 minutes to saw a piece of wood into 3 sections, how many minutes will it take to saw it into 6 sections?
一根木料，锯成3段需要8分钟，如果锯成6段，需要多少分钟．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<result>20</result>