[
  "Convert all lengths to the same unit (metres) first: 169 cm = 1.69 m.",
  "2 3/1 m means 2 + 3 = 5 m (3/1 = 3).",
  "Add the three values: 2.4 + 1.69 + 5 = 9.09 m, then round to 2 decimal places."
]