$$\frac{-4}{5}\times\frac{10}{18}\times(\frac{27}{-8})$$
$\frac{3}{2}=1.5$
$$-\frac{4}{5}\times \frac{10}{18}\times \frac{27}{-8}$$
$$-\frac{4}{5}\times \frac{5}{9}\times \frac{27}{-8}$$
$$\frac{-4\times 5}{5\times 9}\times \frac{27}{-8}$$
$$\frac{-4}{9}\times \frac{27}{-8}$$
$$-\frac{4}{9}\times \frac{27}{-8}$$
$$-\frac{4}{9}\left(-\frac{27}{8}\right)$$
$$\frac{-4\left(-27\right)}{9\times 8}$$
$$\frac{108}{72}$$
$$\frac{3}{2}$$
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$\frac{3}{2} = 1\frac{1}{2} = 1.5$