A person walks 5 kilometers per hour. If cycling takes 8 minutes less than walking for 1 kilometer, then how many times the speed of the person riding the bicycle is the speed of walking.
一个人步行每小时走5公里，如果骑自行车每1公里比步行少用8分钟，那么他骑自行车的速度是步行速度的多少倍．
<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<result>3</result>