Teacher Wang walks 85 meters per minute. His home is 765 meters away from the school, and it only takes 3 minutes to ride a bicycle. How many meters per minute is teacher Wang cycling faster than walking?
王老师每分钟步行85米，他的家离学校有765米，骑车只要3分钟．王老师骑车比步行平均每分钟快多少米？
<gadget id="calculator">765 / 3</gadget>
<output>255</output>

<gadget id="calculator">255 - 85</gadget>
<output>170</output>

<result>170</result>