The difference between 36 and 13 is: 
The difference between 56 and 22 is: 
The difference between 34 and 13 is: 
The difference between 36 and 13 is: 
The difference between 66 and 13 is: 
The difference between 36 and 13 is: 
The difference between 41 and 18 is: 
The difference between 36 and 13 is: 