$$[(\frac{1}{2})^{-2}-(\frac{1}{2})^{-3}]\div(\frac{1}{3})^{-2}$$
$-\frac{4}{9}\approx -0.444444444$
$$\frac{4-\left(\frac{1}{2}\right)^{-3}}{\left(\frac{1}{3}\right)^{-2}}$$
$$\frac{4-8}{\left(\frac{1}{3}\right)^{-2}}$$
$$\frac{-4}{\left(\frac{1}{3}\right)^{-2}}$$
$$\frac{-4}{9}$$
$$-\frac{4}{9}$$
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$-\frac{4}{9} = -0.4444444444444444$
