The difference between 83 and 77 is: 
The difference between 79 and 53 is: 
The difference between 88 and 77 is: 
The difference between 83 and 72 is: 
The difference between 83 and 77 is: 
The difference between 83 and 37 is: 
The difference between 87 and 71 is: 
The difference between 83 and 77 is: 