Calculation: (200020012002/(20012001*20012001-20012000*20012002))=how much.
计算：(200020012002/(20012001*20012001-20012000*20012002))=多少．
<gadget id="calculator">20_012_001 * 20_012_001</gadget>
<output>400_480_184_024_001</output>

<gadget id="calculator">20_012_000 * 20_012_002</gadget>
<output>400_480_184_024_000</output>

<gadget id="calculator">400_480_184_024_001 - 400_480_184_024_000</gadget>
<output>1</output>

<gadget id="calculator">200_020_012_002 / 1</gadget>
<output>200_020_012_002</output>

<gadget id="calculator">20_012_001 ** 2</gadget>
<output>400_480_184_024_001</output>

<gadget id="calculator">400_480_184_024_001 - 1</gadget>
<output>400_480_184_024_000</output>

<result>200_020_012_002</result>