The antelope runs 24km per hour, the speed of the zebra is 1.2 times that of the antelope, and the speed of the ostrich is 1.8 times that of the zebra. What is the speed of the ostrich in km?
羚羊每小时跑24km，斑马的速度是羚羊的1.2倍，鸵鸟的速度是斑马的1.8倍，鸵鸟的速度是多少km？
<gadget id="calculator">24 * 1.2 * 1.8</gadget>
<output>51.84</output>

<result>51.84</result>