11 2/3 :3 4/5= 4 4/5 : 4/17 :3 2/5 =
11 2/3 :3 4/5=35/3:19/5=35/3·5/19=175/57=3 4/57 4 4/5 : 4/17 :3 2/5 = 24/5·17/4:17/5=24/5·17/4·5/17=6