计算999···9*999···9+1999···9 999···9代表2005个9

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计算999···9*999···9+1999···9 999···9代表2005个9
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计算999···9*999···9+1999···9 999···9代表2005个9
计算999···9*999···9+1999···9 999···9代表2005个9

计算999···9*999···9+1999···9 999···9代表2005个9
结果
10000...00000共4010个0
999...999*999...999+1999...999
=999...999*999...999+1000...000+999...999
=999...999(999...999+1)+1000...000
=999...999*1000...000+1000...000
=1000...000(999...999+1)
=1000...000*1000...000
=10000...0000(4010个0)
其中999...999代表共有2005个9
1000...000代表共有2005个0

999......9*999......9+1999.....9 (2005个9) (2005个9) (2005个9)
=999......9*999......9(2005个9) (2005个9)+999......9(2005个9) +10……0(2005个0)
=999……900……0(2005个9)(2005个〇)+10……0(2005个0)
=10……0(4010个0)