[
  "Work step by step through each fraction of the remainder: find 1/5 of $1000 for the daughter, then 1/4 of what remains for groceries, then 2/3 of what is left for savings.",
  "Daughter: 1/5 x $1000 = $200. Remainder = $1000 - $200 = $800. Groceries: 1/4 x $800 = $200. Remainder after groceries = $800 - $200 = $600.",
  "Saved in bank: 2/3 x $600 = $400. Answer: $400 (option C)."
]