The difference between 63 and 13 is: 
The difference between 40 and 14 is: 
The difference between 65 and 13 is: 
The difference between 63 and 11 is: 
The difference between 73 and 13 is: 
The difference between 63 and 13 is: 
The difference between 60 and 16 is: 
The difference between 63 and 13 is: 