The swallow flies 150 kilometers per hour, which is (15/4) the speed of the car. How many kilometers per hour does the car travel?
燕子每小时飞行150千米，是汽车速度的(15/4)，汽车每小时行多少千米？
<gadget id="calculator">15 / 4</gadget>
<output>15/4 = around 3.75</output>

<gadget id="calculator">150 / (15/4)</gadget>
<output>40</output>

<result>40</result>