A highway is 450 kilometers long, and a car travels 40% of the entire distance in 4 hours. According to this calculation, how many hours will it take to complete the journey? (List two different formulas without solution)
一条公路长450千米，一辆汽车4小时行了全程的40%．照这样计算，行完全程共需几小时？(列出两种不同的算式不用解)
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 4</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / (1/10)</gadget>
<output>10</output>

<result>10</result>