456 - 400+50+6, 89 - 80+9, 777 - 700+70+7, 935 - 900+30+5, 402 - 400+2, 830 - 800+30, 2,637 - 2,000+600+30+7, 9,040 - 9,000+40, 8,576 - 8,000+500+70+6, 674 - 600+70=4,

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