There is a piece of wood, cut it into 3 sections, it takes (1/10) time to cut it, each cut takes the same time, then cut it into 5 sections, how much time will it take in total.
有一根木料，把它截成3段，需要(1/10)时，每截一次所用的时间相同，那么截成5段，一共需要多少时．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">(1/10) / 2</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">(1/20) * 4</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>