A car and a motorcycle start from point A at the same time and run in opposite directions. The motorcycle travels to point B in 2 hours, and the car reaches point C in 3 hours. It is known that the distance between point B and point C is 255 kilometers. The motorcycle is faster than the car per hour. If you travel 15 kilometers more, how many kilometers will the car travel per hour?
一辆汽车和摩托车同时从甲地出发背向而行，摩托车行驶2小时到达乙地，汽车3小时到达丙地，已知乙地和丙地距离255千米，摩托车比汽车每小时多行15千米，汽车每小时行多少千米？
<gadget id="calculator">2 * 15</gadget>
<output>30</output>

<gadget id="calculator">255 - 30</gadget>
<output>225</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">225 / 5</gadget>
<output>45</output>

<result>45</result>