motorcycle drives from point A to point B at 85 kilometers per hour. After 3 hours, it exceeds the midpoint by 25 kilometers. How long is the road between A and B?
一辆摩托车从A地开往B地，每小时行85千米，行3小时后超过中点25千米，AB两地间的公路长多少千米？
<gadget id="calculator">85 * 3</gadget>
<output>255</output>

<gadget id="calculator">255 - 25</gadget>
<output>230</output>

<gadget id="calculator">230 * 2</gadget>
<output>460</output>

<result>460</result>