There is a piece of wood that takes 0.4 hours to cut into 5 sections. If the time for each cut is the same, how many hours will it take to cut 10 sections?
有一根木料，用0.4小时截成5段，如果每截一次所用的时间相同，那么要截10段，一共需要多少小时．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">0.4 / 4</gadget>
<output>0.1</output>

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

<gadget id="calculator">0.1 * 9</gadget>
<output>0.9</output>

<result>0.9</result>