Uncle Li walks (3/2) kilometers in (2/5) hours, how many hours does it take him to walk 1 kilometer?
李叔叔(2/5)小时步行(3/2)千米，他步行1千米要用多少小时．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(2/5) / (3/2)</gadget>
<output>4/15 = around 0.266667</output>

<result>4/15 = around 0.266667</result>