In the forest, the hunting dog found a running hare 20 meters ahead, and immediately chased it up. The hunting dog has big steps. It runs 5 steps, and the rabbit needs to run 9 steps. But the rabbit moves fast. Can run 3 steps, how far can the hound run to catch up with the hare?
森林中，猎狗发现前方20米处有一只奔跑的野兔，立即追赶上去，猎狗步子大，它跑5步的路程，兔子要跑9步，但兔子动作快，猎狗跑2步的时间，兔子却能跑3步，猎狗跑出多远才能追上野兔？
<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">2 / 15</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">9 * (2/15) * 20</gadget>
<output>24</output>

<gadget id="calculator">9 * (2/15)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(6/5) - 1</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">24 / (1/5)</gadget>
<output>120</output>

<result>120</result>