Помогите решить 0,6 к 3 = ..... ; 3/5 от 0,1 = ..... ; 4/5 к 5 = .... ; 5/8 от 0,6 =...

$0,6$ к $3=0,6:3=6:30= \frac{6}{30}= \frac{1}{5}=0,2;$
$\frac{3}{5}$ от $0,1= \frac{3}{5}*0,1= \frac{3}{5}* \frac{1}{10}= \frac{3*1}{5*10}= \frac{3}{50}= \frac{6}{100}=0,06;$
$\frac{4}{5}$ к $5= \frac{4}{5}:5= \frac{4}{5}: \frac{5}{1}= \frac{4}{5}* \frac{1}{5}= \frac{4}{25}= \frac{16}{100}=0,16;$
$\frac{5}{8}$ от $0,6= \frac{5}{8}*0,6= \frac{5}{8}* \frac{6}{10}= \frac{5*6}{8*10}= \frac{1*3}{4*2}= \frac{3}{8}= \frac{375}{1000}=0,375;$
$24$ мин к $1$ часу $=24:60= \frac{24}{60}= \frac{4}{10}=0,4$ минут $;$
$\frac{4}{5}$ от $3 \frac{1}{2}= \frac{4}{5}*3 \frac{1}{2}= \frac{4}{5}* \frac{7}{2}= \frac{4*7}{5*2}= \frac{2*7}{5*1}= \frac{14}{5}=2 \frac{4}{5}=2 \frac{8}{10}=2,8;$
$6,2* \frac{2}{5}=6 \frac{2}{10}* \frac{2}{5}= \frac{62}{10}* \frac{2}{5}= \frac{62*2}{10*5}= \frac{62*1}{5*5}= \frac{62}{25}=2 \frac{12}{25}=2 \frac{48}{100}=2,48.$