$$(-2,5-1\frac{5}{6}):1\frac{4}{9}-3\frac{5}{9}\cdot(-2\frac{1}{4})$$
$6\frac{2}{27}\approx 6,074074074$
$\frac{2 ^ {2} \cdot 41}{3 ^ {3}} = 6\frac{2}{27} = 6.074074074074074$
