From city A to city B, it takes 2 hours by motorcycle and 5 hours by bus. How much faster is the speed of riding a motorcycle than a car?
从A城到B地，骑摩托车要用2小时，乘公共汽车要用5小时，骑摩托车的速度比汽车快多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/2) - (1/5)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) / (1/5)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>