Divide (1/5) kilometer of rope into 4 sections on average, how much is each section in 1 kilometer
把(1/5)千米的绳子平均分成4段，每段是1千米的多少
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) / 4 / 1</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>