A car (2/5) travels 18 kilometers, according to this calculation, how many kilometers per hour?
一辆汽车(2/5)时行驶了18千米，照这样计算，每小时行驶多少千米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">18 / (2/5)</gadget>
<output>45</output>

<result>45</result>