What is 66.6666666667 as a fraction?
are you looking for a approximation? is your teacher looking for one?because if the teacher is trying to trick you, a fraction could be 66+6666666667/1000000000
0.666667 = 2/366 x 3 = 198200/3 as a fraction or 66 2/3 as a mixed numbera fraction is a representation of a decimal below a value of 1 so only the .666667 is written as a fraction