? (30.03 - 17.98 × 15.99 ÷ 12.01) = 729.03
ATQ, ?(30.03 - 17.98 × 15.99 ÷ 12.01) = 729.03 ?(30 - 18 × 16 ÷ 12) ~ 729 ?(30 - 24) ~ 36 ?6 ~ 36 ? ~ 3
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