2009(2009/2010)/2009+2008/2008(2008/2009).
2009(2009/2010)/2009+2008/2008(2008/2009)．
<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>4_036_081/2_010 = around 2_008.000498</output>

<gadget id="calculator">(4_036_081/2_010) / 2_009</gadget>
<output>2_009/2_010 = around 0.999502</output>

<gadget id="calculator">2_008 / 2_009</gadget>
<output>2_008/2_009 = around 0.999502</output>

<gadget id="calculator">2_008 * (2_008/2_009)</gadget>
<output>4_032_064/2_009 = around 2_007.000498</output>

<gadget id="calculator">2_008 / (4_032_064/2_009)</gadget>
<output>2_009/2_008 = around 1.000498</output>

<gadget id="calculator">(2_009/2_010) + (2_009/2_008)</gadget>
<output>4_036_081/2_018_040 = around 2</output>

<result>4_036_081/2_018_040 = around 2</result>