The distance between Yangzhou and Shanghai is 300 kilometers, and the bus travels 150 kilometers in 2 hours. At this speed, how long can it take to get from Yangzhou to Shanghai?
扬州到上海相距300千米，大客车2小时行驶150千米，照这样的行驶速度，几小时能从扬州到达上海？
<gadget id="calculator">150 / 2</gadget>
<output>75</output>

<gadget id="calculator">300 / 75</gadget>
<output>4</output>

<result>4</result>