[
  "To find the mass of each equal piece, divide the total mass by the number of pieces. Dividing by 2 is the same as multiplying by 1/2.",
  "8/9 / 2 = 8/9 x 1/2 = 8/18. Simplify: divide top and bottom by 2 to get 4/9.",
  "Each piece has a mass of 4/9 kg. Answer: 4/9 kg (option A)."
]