A hunting dog is chasing a rabbit 20 meters ahead. It is known that the distance of the dog is 7 steps, the rabbit needs to hop 10 steps, and the time the dog hops 3 times, the rabbit hops 4 times. How far will the rabbit run before being overtaken by the hounds?
一只猎狗正在追赶前方20米处的兔子，已知狗7步的距离，兔子要跳10步，狗跳3次的时间兔子跳4次．兔子跑出多远将被猎狗追上？
<gadget id="calculator">30 - 28</gadget>
<output>2</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<result>200</result>