$2\frac{1}{5}\cdot 3=2\cdot 3+\frac{1}{5}\cdot 3=6+\frac{3}{5}=6\frac{3}{5}$  

 

$4\frac{2}{11}\cdot 4=4\cdot 4+\frac{2}{11}\cdot 4=16+\frac{8}{11}=16\frac{8}{11}$  

 

 

$6\frac{1}{8}\cdot 5=6\cdot 5+\frac{1}{8}\cdot 5=30+\frac{5}{8}=30\frac{5}{8}$  

 

$7\frac{5}{26}\cdot 5=$   $7\cdot 5+\frac{5}{26}\cdot 5=$   $35+\frac{25}{26}=35\frac{25}{26}$