A butterfly flies 7.5 kilometers per hour. The speed of the bee is 2.4 times that of the butterfly. How many kilometers more can the bee fly than the butterfly?
一只蝴蝶每小时飞行7.5千米，蜜蜂的速度是蝴蝶飞行速度的2.4倍，蜜蜂比蝴蝶每小时多飞行多少千米？
<gadget id="calculator">7.5 * 2.4</gadget>
<output>18</output>

<gadget id="calculator">18 - 7.5</gadget>
<output>10.5</output>

<result>10.5</result>