The infected computer can infect other computers, and the infected computer can also infect other computers after the first round. Then we assume that X computers are infected in each round, and X computers are infected in the first round, that is, * * * there are (1+X) infected computers after the first round; In the second round, (1+X)X new computers were infected, and there were (1+X)X+( 1+X) computers, that is, (1+X) square computers. So each round is 8 sets. But in the third round of newly infected computers (1+X)X+( 1+X)X, there are always * * cubic infected computers, that is, (1+X) x (65438).