Butterflies fly 2.6 kilometers per hour, and bees fly 2.4 times faster than butterflies. How many kilometers more do bees fly per hour than butterflies?
蝴蝶每小时飞行2.6千米，蜜蜂的飞行速度是蝴蝶的2.4倍．蜜蜂每小时比蝴蝶多飞行几千米？
<gadget id="calculator">2.6 * 2.4</gadget>
<output>6.24</output>

<gadget id="calculator">6.24 - 2.6</gadget>
<output>3.64</output>

<result>3.64</result>