Teacher Zhou and Teacher Wang walked along the school's circular boulevard. Teacher Wang walked 55 meters per minute, and Teacher Zhou walked 65 meters per minute. It is known that the perimeter of the boulevard is 480 meters, and they walk backwards from the same place at the same time. After they met for the 10th time, Mr. Wang returned to the starting point after walking a few more meters.
周老师和王老师沿着学校的环形林荫道散步，王老师每分钟走55米，周老师每分钟走65米．已知林荫道周长是480米，他们从同一地点同时背向而行．在他们第10次相遇后，王老师再走多少米就回到出发点．
<gadget id="calculator">480 - 280</gadget>
<output>200</output>

<result>200</result>