A hunting dog can run about 56 kilometers per hour, which is equivalent to (7/9) that an ostrich runs per hour. About how many kilometers can an ostrich run per hour?
猎狗每小时大约可以跑56千米，相当于鸵鸟每小时跑的(7/9)．鸵鸟每小时大约可以跑多少千米？
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">56 / (7/9)</gadget>
<output>72</output>

<result>72</result>