The difference between 97 and 77 is: 
The difference between 95 and 10 is: 
The difference between 98 and 77 is: 
The difference between 97 and 75 is: 
The difference between 97 and 77 is: 
The difference between 97 and 57 is: 
The difference between 90 and 71 is: 
The difference between 97 and 77 is: 