If it takes 5 minutes to saw a piece of wood into 2 pieces, how many minutes will it take to saw it into 10 pieces?
把一根木头锯成2段要5分钟，锯成10段要多少分．
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">5 * 9</gadget>
<output>45</output>

<result>45</result>