arctan3.45
    637.64/701.17
    √(〖631.56〗^2+（450.45-588）²)
    √(〖631.56〗^2+（450.45-602）²)
    638.27/701.17
    √(〖637.64〗^2+291.66²)
    850.80-588+28.86
    42×14
    638.27/707.11
    √(〖637.64〗^2+305.66²)
    850.80-574+28.86
    41×14
    √(〖637.64〗^2+347.66²)
    850.80-532+28.86
    38×14
    638.27/713.27
    √(〖637.64〗^2+319.66²)
    850.80-560+28.86
    631.56+6.08
    800÷100×（0.8+0.79²×4.5）

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