Помогите решить номера 1 и 2

[latex]3\cdot 2\frac{5}{6} =3\cdot \frac{17}{6} = \frac{17}{2} =8\frac{1}{2}=8,5\\\\(-1\frac{3}{8})\cdot 4=- \frac{11}{8} \cdot 4=-\frac{11}{2}=-5,5\\\\ -9\frac{4}{9} :(-5)= \frac{85}{9} \cdot 5= \frac{425}{9} =47 \frac{2}{9} \\\\ 2\frac{3}{7} :(-14)=- \frac{17}{7} \cdot \frac{1}{14}= \frac{17}{98} \\\\\\3,2\cdot (-5)-(-4,8):(-3\frac{1}{5})=-16-4,8: \frac{16}{5} =\\\\=-16- \frac{24}{5} \cdot \frac{5}{16} =-16- \frac{24}{16} =-16- \frac{3}{2} =-17\frac{1}{2}=-17,5[/latex]