Xiaogang goes to school. If he rides a bicycle at 0.25 kilometers per minute, he can get there in 15 minutes. If he walks for 25 minutes, how many kilometers per minute will he walk?
小刚去上学，如果骑自行车每分钟行0.25千米，15分钟可以到达，如果步行要25分钟，步行每分钟走多少千米？
<gadget id="calculator">15 / 25</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">0.25 * (3/5)</gadget>
<output>0.15</output>

<result>0.15</result>