If a car travels 200 kilometers in 4 hours, how many hours does it take to travel 1 kilometer on average?
一辆汽车4小时行200千米，平均每行1千米要多少小时．
<gadget id="calculator">4 / 200</gadget>
<output>1/50 = around 0.02</output>

<result>1/50 = around 0.02</result>