The difference between 97 and 39 is: 
The difference between 99 and 23 is: 
The difference between 99 and 39 is: 
The difference between 97 and 36 is: 
The difference between 77 and 39 is: 
The difference between 97 and 89 is: 
The difference between 98 and 30 is: 
The difference between 97 and 39 is: 