train travels 720 kilometers in 9 hours, and an airplane travels 2,400 kilometers in 3 hours. How many times the speed of the airplane is the speed of the train?
一列火车9小时行720千米，一架飞机3小时飞行2400千米，飞机的速度是火车速度的几倍？
<gadget id="calculator">720 / 9</gadget>
<output>80</output>

<gadget id="calculator">2_400 / 3 / 80</gadget>
<output>10</output>

<result>10</result>