389×45+(987-345)-576=16 401
1) 987-345=639
2) 389×45=16 338
3) 16 338+639=16 977
4) 16 977-576=16 401
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389×45+(987-345)-576=16 401
1) 987-345=639
2) 389×45=16 338
3) 16 338+639=16 977
4) 16 977-576=16 401