On Sunday, Mingming went to the Cultural Palace to rehearse the dance, and she traveled (1/2) km in (1/5) hours. Mingming's house is 4 kilometers away from the Cultural Palace. At this speed, how long will it take her to reach the Cultural Palace?
星期天，明明到文化宫去排练舞蹈，她(1/5)小时行了(1/2)km．明明家到文化宫有4km，照这样的速度，她到文化宫需要多长时间？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">(1/2) / (1/5)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">4 / (5/2)</gadget>
<output>8/5 = around 1.6</output>

<result>8/5 = around 1.6</result>