Box 1 contains 4 blue balls and 6 white balls. Box 2 contains 7 blue balls and 12 cyan balls. Box 3 contains 4 red balls and 5 blue balls. Box 4 contains 8 white balls and 3 blue balls. The probability of choosing 4 white balls from 4 boxes if 5 balls are selected simultaneously from Box 1 and put into Box 2, then into Box 3, then into Box 4 is what? What is the expected number of white balls in Box 3