2009/(2009/2010)=how much.
2009/(2009/2010)=多少．
<gadget id="calculator">2_009 / 2_010</gadget>
<output>2_009/2_010 = around 0.999502</output>

<gadget id="calculator">2_009 / (2_009/2_010)</gadget>
<output>2_010</output>

<result>2_010</result>