A certain class meets 5 days a week. Student A comes to class each day with probability 0.9, independent of any other days or other students, and similarly, student B comes to class each day with probability 0.8, independent of any other days or other students. In a given week, what is the probability that there are at least 4 days in which both of these students are in class? (Please enter your answer as a decimal, correct to three places.)

Please answer it as soon as possible.