tan20tan30+tan30tan40+tan40tan20
    505885997*1976730144598190963568023014679333
    78875943472201*1267801
    251*5051
    72÷6.6
    72÷6.6
    72÷6.6
    37.8×0.5-37.8×0.15=
    120/7
    60÷3/10-3/10÷60
    27.3×0.52-27.3×0.15 =
    27.3×0.5-27.3×0.15 =
    27.3×0.52-27.3×0.15 =
    27.3×0.5-27.3×0.15 =
    27.3×0.55-27.3×0.15 =
    27.3×0.55-27.3×0.15 =
    27.3×0.5-27.3×0.15 =
    46.2×0.5-46.2×0.15 =
    46.2×0.55-46.2×0.15 =
    2024×2022/2023

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