From the school to the Cultural Palace, A takes 20 minutes and B takes 16 minutes. B takes much less time than A.
从学校到文化宫，甲用20分钟，乙用16分钟．乙用的时间比甲少多少．
<gadget id="calculator">20 - 16</gadget>
<output>4</output>

<gadget id="calculator">4 / 20</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>