A study was conducted of the trend in the design of social robots. In a random sample of 108 social robots, 61 were built with legs only, 21 were built with wheels only, 11 were built with both legs and wheels, and 15 were built with neither legs nor wheels Use the rule of complements to find the probability that a randomly selected social robot is designed with either legs or wheels or both The probability is (Type an integer or a decimal. Round to three decimal places as needed)