The difference between 99 and 58 is: 
The difference between 93 and 17 is: 
The difference between 99 and 58 is: 
The difference between 99 and 52 is: 
The difference between 89 and 58 is: 
The difference between 99 and 38 is: 
The difference between 100 and 59 is: 
The difference between 99 and 58 is: 