Uncle Wang walks 4 kilometers per hour from home to school, and arrives at school in 0.8 hours. When he returns, he rides a bicycle and travels 10 kilometers per hour. How long does it take to get home?
王叔叔从家到学校，步行每小时走4千米，0.8小时到达学校，返回时骑自行车，每小时行10千米，几小时能到家？
<gadget id="calculator">0.8 / 10</gadget>
<output>0.08</output>

<gadget id="calculator">4 * 0.08</gadget>
<output>0.32</output>

<result>0.32</result>