$$\left. \begin{array} { l } { 2 \frac { 1 } { 3 } } \\ { - 0.19 } \end{array} \right.$$
$\frac{643}{300}\approx 2.143333333$
$$\frac{6+1}{3}-0.19$$
$$\frac{7}{3}-0.19$$
$$\frac{7}{3}-\frac{19}{100}$$
$$\frac{700}{300}-\frac{57}{300}$$
$$\frac{700-57}{300}$$
$$\frac{643}{300}$$
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$\frac{643}{3 \cdot 2 ^ {2} \cdot 5 ^ {2}} = 2\frac{43}{300} = 2.1433333333333335$