conversations.from: human
conversations.value: Melanie's father opens up an animal farm starting with 50 cows and 20 chickens. Milkie Cows Limited brings him 20 cows per day and Broilers Limited brings him 10 chickens per day, for three weeks. What's the total number of animals on the farm after three weeks?
  Find the solution.
conversations.from: assistant
conversations.value: Animals were brought to the farm for three weeks, which is 3*7 = 21 days.
  The number of cows brought in by Milkie is 21*20 = 420 cows
  The number of chickens brought in by Broilers is 10*21 = 210 chickens.
  The total number of animals on the farm is 50+20+210+420 = 700 animals