It takes 10 minutes for Uncle Li to saw a piece of wood into three sections, how many minutes will it take to saw the same piece of wood into nine sections?
李叔叔把一根木头锯成三段要10分钟，那么锯同样的木头锯成九段就要多少分钟．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">9 - 1</gadget>
<output>8</output>

<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<result>40</result>