Li Qiang rides a bicycle from home to school at a speed of 225 m/min, and arrives at school in 24 minutes. Since he lost his key, he could only walk along the same road to go home. If he walks at 60 m/min, how many minutes will it take him to get home?
李强骑自行车从家去学校，速度是225米/分，24分后到达学校．由于他丢了钥匙，回家只能沿着原路步行．如果他步行的速度是60米/分，那么回家要花多少分钟？
<gadget id="calculator">24 / 60</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">225 * (2/5)</gadget>
<output>90</output>

<result>90</result>