The distance between A and B is 350 km, the speed of the car is 70 km/h, and the speed of the motorcycle is 50 km/h. How long does it take me to go from A to B by car instead of by motorcycle?
甲乙两地相距350千米，汽车的速度是70千米/时，摩托车的速度是50千米/时．我从甲地去乙地，乘汽车比乘摩托车节省多长时间？
<gadget id="calculator">350 / 50</gadget>
<output>7</output>

<gadget id="calculator">350 / 70</gadget>
<output>5</output>

<gadget id="calculator">7 - 5</gadget>
<output>2</output>

<result>2</result>