The difference between 97 and 78 is: 
The difference between 61 and 57 is: 
The difference between 99 and 78 is: 
The difference between 97 and 74 is: 
The difference between 97 and 78 is: 
The difference between 97 and 58 is: 
The difference between 99 and 70 is: 
The difference between 97 and 78 is: 