Chunhua and Qiusheng ride motorcycles from the same place and drive in opposite directions at the same time. After 0.5 hours, the distance is 47.5 kilometers, Chunhua travels 42.5 kilometers per hour, how many kilometers does Qiusheng travel per hour?
春华和秋生骑摩托车同时从同一地点向相反方向行驶．0.5小时后相距47.5千米，春华每小时行驶42.5千米，秋生每小时行驶多少千米？
<gadget id="calculator">47.5 / 0.5</gadget>
<output>95</output>

<gadget id="calculator">95 - 42.5</gadget>
<output>52.5</output>

<result>52.5</result>