Given a customer buying electronics database, and 10,000 transactions are analyzed and the data show: 6,000 of customer transactions included computer games (game) 7,500 of them included videos (video), 4,000 of them included both computer games and videos The generated association rule is: game -> video [support = ?%, confidence = ?%] What is the confidence of the rule? (please enter the value with the only integer part, for example, 50%, enter 50.