83/5= 16.6
166 2/3 cannot be simplified further.
0.166 = 166/1000 which can be simplified to 83/500
166 turned into a fraction = 166/1
0.05 as a fraction simplified is 1/20
0.76 = 19/25 as a fraction simplified
6.6 as a simplified fraction is 33/5
6.15 is a fraction. It is a fraction in decimal form but that does not stop it being a fraction. And, as a decimal fraction, it cannot be simplified. Its rational equivalent is 615/100 which can be simplified to 123/20.
11/26 is the simplified fraction
166/1000
6.25
166 and 2/3 = 500/3
0.7 as a non-simplified fraction = 7/10