Let's review what you've learned about identifying whole numbers in the form of fractions. Remember, if the bottom number (denominator) is 1, then the fraction is equal to the top number (numerator).
Let's start with this fraction: 
.
The bottom number in this fraction is 1, and the top number is 57. What whole number is this fraction equal to? It's 57.
What about this fraction: 
?
It's equal to the whole number 39.
Try going the other way. Start with a whole number and convert it to a fraction. How would you write the whole number 18 as a fraction? You would use 18 as the top number and 1 as the bottom number. So the fraction would be 
.
How about the whole number 1? The fraction of that would be 
.
What if you had the fraction 
? Can that be simplified to a whole number? Yes, it can, because the top number and the bottom number can both be divided by 9. When you do that, you get 
, which is equal to two wholes.
