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    (4000-50×2)/100+1=
    (4000+300-35×2+15×20×2)×3=
    5750+100-35=
    (5750-400-250-1050×2)/200-1=
    [(5750+100-35×2)+15×20×2]×7=
    [(5750-400)/3+500-35+15×2×20]×2=
    [(5750+100-35×2)+15×20×2]×2=
    [(4300+200+100-35×2)+15×12×2]×6=
    (4300-250-400-1050×2)/200-1=
    [(1050-50)/100+1]×2=
    [(4300+200+100-35×2)+15×20×2]×6=
    [(4300-250-400)/3+500-35+15×20]×4=
    [(4300+200+100-35×2)+15×20×2]×2=
    [(4700+400+500-35×2)+15×12]×6+[(5000+500+100-35×2)+15×12×2]×6=
    [(300-20×2)+(700-20×2)]×2+11.9×8=
    (8000+6000+3700-1050×6-500×3-100-250)/200-1=
    (4300-100)/100+1(5000-100)/100+1+(4700-100)/100+1+[(1050-50)/100+1]×6=
    [(4300-250-400)/3+500-35+15×20]×2+3700-250-250+500-35+15×18=
    5750+3250+8000+5000+6000+3700+250+200-35×2+15×20×2=
    8000-35×2

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