The difference between 47 and 19 is: 
The difference between 91 and 23 is: 
The difference between 49 and 19 is: 
The difference between 47 and 11 is: 
The difference between 37 and 19 is: 
The difference between 47 and 19 is: 
The difference between 49 and 11 is: 
The difference between 47 and 19 is: 