It takes Xiao Ming 0.5 hours to go from home to school, how much can he walk the whole distance in 15 minutes
小明从家到学校要0.5小时，他15分钟可走全程的多少
<gadget id="calculator">15 / 30</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>