question: Mrs. Harrington bought 12 boxes of oranges at the market. She gave her mom and her sister 2 boxes of oranges each. Then she kept 1/4 of the oranges and sold the rest. How many oranges did Mrs. Harrington sell if each box contains 20 oranges?
answer: Mrs. Harrington gave a total of 2 x 2 = <<2*2=4>>4 boxes of oranges to her mom and sister.
  She then had 12 - 4 = <<12-4=8>>8 boxes of oranges left.
  She kept 8 x 1/4 = <<8*1/4=2>>2 boxes of oranges.
  So, she had 8 - 2 = <<8-2=6>>6 boxes of oranges to be sold.
  Hence, Mrs. Harrington sold 6 boxes x 20 oranges = <<6*20=120>>120 oranges.
  #### 120