In the 400-meter hurdles in track and field competition, you have to run 45 meters from the starting line to the first hurdle. There are 10 hurdles in total. The length of the runway between adjacent two hurdles is equal. 40 meters apart. What is the length of the runway between two adjacent hurdles?
在田径比赛的400米跨栏跑中，从起跑线到第一个栏架要跑45米，一共有10个栏架，相邻两个栏架之间的跑道的长度相等，最后一个栏架与终点相距40米．相邻两个栏架之间的跑道长多少米．
<gadget id="calculator">400 - 45 - 40</gadget>
<output>315</output>

<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">315 / 9</gadget>
<output>35</output>

<result>35</result>