It takes 10 minutes for Uncle Li to saw a piece of wood into 2 sections, how many minutes will it take to saw it into 9 sections?
李叔叔把一根木头锯成2段要10分钟，那么锯成九段就要多少分钟．
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">10 / 1</gadget>
<output>10</output>

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

<gadget id="calculator">10 * 8</gadget>
<output>80</output>

<result>80</result>