Divide an iron wire with a length of 2 meters into 5 sections on average, how much (2/5) meters account for the total length
把一根长2米的铁丝平均分成5段，(2/5)米占全长的多少
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 2</gadget>
<output>1/5 = around 0.2</output>

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