$$\left. \begin{array} { l } { 2 k g 800 g m } \\ { \frac { 1 } { 99 } : \frac { 1 } { 66 } : \frac { 2 } { 33 } } \end{array} \right.$$
$22gg_{800}km$
$$22gg_{800}km$$
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$2gg_{800}km,\ 11$
