The probability that a shipping company will obtain authorization to include a certain port of call in its shipping route is dependent on whether certain legislation is passed. The company believes there is a 0.5 chance that both the relevant legislation will pass and it will get the required authorization to visit the port. The company further estimates that the probability that the legislation will pass is 0.75. If the company should find that the relevant legislation just passed, what is the probability that authorization to visit the port will be granted?