$$4 \frac { 2 } { 9 } - 2 \frac { 1 } { 3 }$$
$\frac{17}{9}\approx 1.888888889$
$$\frac{36+2}{9}-\frac{2\times 3+1}{3}$$
$$\frac{38}{9}-\frac{2\times 3+1}{3}$$
$$\frac{38}{9}-\frac{6+1}{3}$$
$$\frac{38}{9}-\frac{7}{3}$$
$$\frac{38}{9}-\frac{21}{9}$$
$$\frac{38-21}{9}$$
$$\frac{17}{9}$$
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$\frac{17}{3 ^ {2}} = 1\frac{8}{9} = 1.8888888888888888$
