460.7625+900
    1559.75+375+2700
    7956.5+10000+56000
    156+40+5
    259.6125+800
    1491.2+2400+375
    9584.8+64000+10000
    51.2/16
    0.5*10*(3.2^2-2.2^2)
    3/9*3
    √√2
    √490
    √4444
     5/7+2/9+2/7+7/9
    29-45
    tan50
    arccos0.46
    176*0.706105/(1-(0.706105^2))^0.5+57.5*9/16*(9/16)*0.706105/(1-81/256*((9/16)*0.706105^2))=
    arcsin0.3971840625
    arcsin0.706105

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