What is 46.66666666666667 as a fraction?

.666666666666... is the same as 2/3. So, you could write it as 46 2/3. If you multiply 46 by 3, you can see that 46 is equal to 138/3. If you add 138/3 and 2/3, you can see that 46.66666666666666... is the same thing as 140/3, so that is your answer.