The difference between 89 and 37 is: 
The difference between 91 and 49 is: 
The difference between 89 and 37 is: 
The difference between 89 and 37 is: 
The difference between 69 and 37 is: 
The difference between 89 and 57 is: 
The difference between 91 and 39 is: 
The difference between 89 and 37 is: 