Calculation: (20122012/(20122012**2-20122011*20122013+1)) = how much.
计算：(20122012/(20122012**2-20122011*20122013+1))=多少．
<gadget id="calculator">20_122_012 ** 2</gadget>
<output>404_895_366_928_144</output>

<gadget id="calculator">20_122_011 * 20_122_013</gadget>
<output>404_895_366_928_143</output>

<gadget id="calculator">404_895_366_928_144 - 404_895_366_928_143</gadget>
<output>1</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">20_122_012 / 2</gadget>
<output>10_061_006</output>

<result>10_061_006</result>