The speed of the train is 120 km/h, and the speed of the swallow is 150 km/h. The speed of the train is the speed of the swallow.
火车的速度是120千米/时，燕子的速度是150千米/时．火车的速度是燕子的多少．
<gadget id="calculator">120 / 150</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>