2005*20062006-2006*20052005=how much.
2005*20062006-2006*20052005=多少．
<gadget id="calculator">2_005 * 20_062_006</gadget>
<output>40_224_322_030</output>

<gadget id="calculator">2_006 * 20_052_005</gadget>
<output>40_224_322_030</output>

<gadget id="calculator">40_224_322_030 - 40_224_322_030</gadget>
<output>0</output>

<result>0</result>