A piece of wood is cut into 7 sections in 3 hours. If the time for each section is the same, how many hours will it take to cut 11 sections?
有一根木材，3小时截成7段，如果每截一次所用的时间相同，那么要截11段，一共需要多少小时．
<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">3 / 6</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">11 - 1</gadget>
<output>10</output>

<gadget id="calculator">(1/2) * 10</gadget>
<output>5</output>

<result>5</result>