\[4\frac{1}{2} \cdot \frac{8}{9} - 5\frac{1}{3}\ :10\frac{2}{3} =\]
\[= \frac{9 \cdot 8}{2 \cdot 9} - \frac{16}{3}\ :\frac{32}{3} = 4 - \frac{16 \cdot 3}{3 \cdot 32} =\]
\[= 4 - \frac{1}{2} = 3\frac{1}{2} = 3,5\]