The difference between 73 and 40 is: 
The difference between 89 and 51 is: 
The difference between 79 and 40 is: 
The difference between 73 and 40 is: 
The difference between 93 and 40 is: 
The difference between 73 and 40 is: 
The difference between 80 and 47 is: 
The difference between 73 and 40 is: 