The difference between 37 and 18 is: 
The difference between 72 and 62 is: 
The difference between 39 and 18 is: 
The difference between 37 and 14 is: 
The difference between 87 and 18 is: 
The difference between 37 and 18 is: 
The difference between 39 and 10 is: 
The difference between 37 and 18 is: 