The hunting dog finds a rabbit in front of it. If the rabbit does not move, the hunting dog can catch the rabbit by running 10 steps. But when the hound started chasing, the rabbit was alert and fled forward. It is known that the hound has a long stride. It takes 9 steps for the rabbit to run 5 steps, but the rabbit moves fast. The time for the hound to run 2 steps, the rabbit can run 3 How many steps did the rabbit take before being overtaken by the hound?
猎犬发现前方有一只兔子，如果兔子在原地不动，猎犬跑10步就能捉到兔子．但在猎犬开始追击时，兔子警觉并逃向前方，已知猎犬的步子大，它跑5步的路程兔子要跑9步，而兔子的动作快，猎犬跑2步的时间，兔子能跑三步，那么，兔子在跑出多少步时被猎犬追上？
<gadget id="calculator">18 - 15</gadget>
<output>3</output>

<gadget id="calculator">18 / 3</gadget>
<output>6</output>

<gadget id="calculator">10 * 6</gadget>
<output>60</output>

<gadget id="calculator">60 / 10</gadget>
<output>6</output>

<gadget id="calculator">15 * 6</gadget>
<output>90</output>

<result>90</result>