A red-crowned crane is 1.2 meters tall, and an ostrich is 2.4 times its height. How much taller is this ostrich than a red-crowned crane?
一只丹顶鹤身高1.2米，一只鸵鸟的身高是它的2.4倍．这只鸵鸟比丹顶鹤高多少米？
<gadget id="calculator">1.2 * 2.4</gadget>
<output>2.88</output>

<gadget id="calculator">2.88 - 1.2</gadget>
<output>1.68</output>

<result>1.68</result>