The two walked from school to the exhibition hall. Dongdong needed 24 minutes and Feifei needed 18 minutes. How much less time does Feifei spend than Dongdong
两人从学校步行去展览馆，东东需要24分，飞飞需要18分．飞飞的时间比东东少多少
<gadget id="calculator">24 - 18</gadget>
<output>6</output>

<gadget id="calculator">6 / 24</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>