conversations.from: human
conversations.value: I would love to understand how to solve this problem: Melany has to fence a 5000 feet square field with wire mesh. If one foot of wire mesh is sold at $30, and she had $120000, how many feet of the field will not be fenced?
  Can you explain?
conversations.from: assistant
conversations.value: Since one-foot wire mesh is sold at $30, with $120000, Melany can buy $120000/$30 = 4000 feet of wire mesh.
  If Melany has to fence 5000 feet of the field and has 4000 feet of wire mesh, she will not fence 5000-4000 = 1000 feet of the field.