A hare escapes 80 steps before the hound catches up with it. The hound only needs to run 3 steps for the hare to run 8 steps, and the rabbit can run 9 steps in the time it takes the hound to run 4 steps. How many steps must the hound run to catch up with the hare?
一只野兔逃出80步后猎狗才追上它，野兔跑8步的路程猎狗只需跑3步，猎狗跑4步的时间兔子能跑9步．猎狗至少要跑多少步才能追上野兔？
<gadget id="calculator">80 * 3</gadget>
<output>240</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">9 * 3</gadget>
<output>27</output>

<gadget id="calculator">32 - 27</gadget>
<output>5</output>

<gadget id="calculator">240 / 5</gadget>
<output>48</output>

<gadget id="calculator">4 * 48</gadget>
<output>192</output>

<result>192</result>