99.(共2002个)乘99.(共2002个)+1999.(共2002个)等于几

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99.(共2002个)乘99.(共2002个)+1999.(共2002个)等于几
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99.(共2002个)乘99.(共2002个)+1999.(共2002个)等于几
99.(共2002个)乘99.(共2002个)+1999.(共2002个)等于几

99.(共2002个)乘99.(共2002个)+1999.(共2002个)等于几
99.(共2002个9)乘99.(共2002个9)+1999.(共2002个9)
=[100...(2002个0)-1]×[(100...(2002个0)-1]+200...(2002个0)-1
=100...(4004个0)-200...(2002个0)+1+200...(2002个0)-1
=100...(4004个0)