Q: What is the result of 86 minus 18? A: 
Q: What is the result of 81 minus 15? A: 
Q: What is the result of 89 minus 18? A: 
Q: What is the result of 86 minus 15? A: 
Q: What is the result of 56 minus 18? A: 
Q: What is the result of 86 minus 28? A: 
Q: What is the result of 89 minus 11? A: 
Q: What is the result of 86 minus 18? A: 