A hound is chasing a hare. If the hare returns 80 steps, it will reach the location of the hound. It is known that the hare runs 3 steps in the time that the hound runs 2 steps; and the distance covered by the hound running 4 steps is equal to the distance covered by the hare running 7 steps. So, how many steps does the hound run to catch the hare?
一条猎犬追捕野兔．野兔如果返回80步，就到达猎犬所在地．已知在猎犬跑2步的时间内野兔跑3步；而猎犬跑4步的路程等于野兔跑7步的路程．那么，猎犬跑多少步才能捕获野兔？
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">7 - 6</gadget>
<output>1</output>

<gadget id="calculator">80 / 1</gadget>
<output>80</output>

<gadget id="calculator">80 * 4</gadget>
<output>320</output>

<result>320</result>