prompt: Grover bought 3 boxes of face masks. He plans to sell them for $0.50 each. If each box has 20 face masks, and he bought the 3 boxes for $15, how much will be his total profit?
messages.content: Grover bought 3 boxes of face masks. He plans to sell them for $0.50 each. If each box has 20 face masks, and he bought the 3 boxes for $15, how much will be his total profit?
messages.role: user
messages.content: Grover will earn $0.50 x 20 = $<<0.50*20=10>>10 for each box.
  So, he will earn $10 x 3 = $<<10*3=30>>30 after selling all the face masks.
  Therefore, his total profit will be $30 - $15 = $<<30-15=15>>15.
  #### 15
messages.role: assistant