1.6. $$ \frac{\left[2\frac{8}{9} \cdot 1\frac{5}{13} + (6 - 2,85) \div 0,003 \right] \cdot \left(3\frac{5}{68} + 1\frac{4}{51} - 2\frac{11}{34} \right)}{33,75 \cdot 16,1 + \frac{3}{4} \cdot 95\frac{83}{90} + 2\frac{2}{3} \cdot 0,1875 \cdot 12,7}; $$