<human>:  John buys 500 newspapers. Each newspaper sells for $2. He sells 80% of them. He buys them all for 75% less than the price at which he sells them. How much profit does he make?
<bot>: How many newspapers does John sell? ** He sells 500*.8=<<500*.8=400>>400 newspapers
How much does John sell the newspapers for? ** He sells them for 400*2=$<<400*2=800>>800
How much does John get a discount on the newspapers? ** He gets a discount of 2*.75=$<<2*.75=1.5>>1.5 on the newspapers
How much does John buy the newspapers for? ** So he buys them for 2-1.5=$<<2-1.5=.5>>.5
How much did John spend buying the newspapers? ** So he spent 500*.5=$<<500*.5=250>>250 buying them
How much profit does John make? ** That means he made a profit of 800-250=$<<800-250=550>>550
#### 550