prompt: Martin has 18 goldfish. Each week 5 goldfish die. Martin purchases 3 new goldfish every week. How many goldfish will Martin have in 7 weeks?
messages.content: Martin has 18 goldfish. Each week 5 goldfish die. Martin purchases 3 new goldfish every week. How many goldfish will Martin have in 7 weeks?
messages.role: user
messages.content: In 7 weeks 5*7 = <<35=35>>35 goldfish die.
  In 7 weeks, Martin purchases 3*7 = <<3*7=21>>21 goldfish.
  In 7 weeks, Martin will have 18-35+21 = <<18-35+21=4>>4 goldfish.
  #### 4
messages.role: assistant