Да помогите уже 2 пример

Решите задачу:

$\ \ \ \ \ \ 1\ \ \ \ \ \ \ 5\ \ \ \ 7 \ \ \ \ \ \ \ 2\ \ \ \ \ \ 3\ \ \ \ \ \ 4\ \ \ \ \ \ 6\\(3\frac{5}{6}-1\frac{2}{15})*\frac{5}{9}+((\frac{1}{20}+\frac{6}{25})*8\frac{1}{3}-1\frac{1}{6})*2\\\\1)3\frac{5}{6}-1\frac{2}{15}=2+\frac{25-4}{30}=2+\frac{21}{30}=2\frac{21}{30}=2\frac{7}{10}\\\\2)\frac{1}{20}+\frac{6}{25}=\frac{5+24}{100}=\frac{29}{100}\\\\3)\frac{29}{100}*8\frac{1}{3}=\frac{29}{100}*\frac{25}{3}=\frac{29}{12}=2\frac{5}{12}$

$4)2\frac{5}{12}-1\frac{1}{6}=1+\frac{5-2}{12}=1+\frac{3}{12}=\frac{15}{12}=1\frac{3}{12}=1\frac{1}{4}\\\\5)2\frac{7}{10}*\frac{5}{9}=\frac{27}{10}*\frac{5}{9}=\frac{3}{2}\\\\6)1\frac{1}{4}*2=\frac{5}{4}*2=\frac{5}{2}=2\frac{1}{2}\\\\7)\frac{3}{2}+2\frac{1}2}=2+\frac{3+1}{2}=2+\frac{4}{2}=2+2=4$