\[\frac{3,6}{4,5 \cdot 1,6} = \frac{36}{45 \cdot 1,6} = \frac{4}{5 \cdot 1,6} = \frac{10}{5 \cdot 4} =\]
\[= \frac{10}{20} = \frac{1}{2} = 0,5\]