The difference between 87 and 18 is: 
The difference between 90 and 53 is: 
The difference between 89 and 18 is: 
The difference between 87 and 14 is: 
The difference between 37 and 18 is: 
The difference between 87 and 18 is: 
The difference between 89 and 10 is: 
The difference between 87 and 18 is: 