1+2+3+k+7+8+7+k+2+1分之888888*888888怎么做

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1+2+3+k+7+8+7+k+2+1分之888888*888888怎么做

1+2+3+k+7+8+7+k+2+1分之888888*888888怎么做
1+2+3+k+7+8+7+k+2+1分之888888*888888怎么做

1+2+3+k+7+8+7+k+2+1分之888888*888888怎么做
(1+2+3+……+7+8+7+……+2+1)分之888888*888888
=(8*8)分之888888*888888
=111111*111111
=12345654321