Obviously, it takes 15 minutes to travel 5 kilometers by bicycle, how many kilometers per minute on average.
明明骑自行车行驶5千米要15分钟，平均每分钟走多少千米．
<gadget id="calculator">5 / 15</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>