Q: How much is 73 minus 36? A: 
Q: How much is 79 minus 17? A: 
Q: How much is 77 minus 36? A: 
Q: How much is 73 minus 30? A: 
Q: How much is 73 minus 36? A: 
Q: How much is 73 minus 66? A: 
Q: How much is 77 minus 30? A: 
Q: How much is 73 minus 36? A: 