A butterfly flies 4.9 kilometers at 0.5 hours, and the flying speed of a bee is 2.4 times that of a butterfly. How many kilometers does the bee fly per hour?
一只蝴蝶0.5时飞行4.9千米，蜜蜂的飞行速度是蝴蝶的2.4倍．蜜蜂每时飞行多少千米？
<gadget id="calculator">4.9 / 0.5</gadget>
<output>9.8</output>

<gadget id="calculator">9.8 * 2.4</gadget>
<output>23.52</output>

<result>23.52</result>