I subscribed for 3000 new shares. If I win, do I have 3000 shares?

No, if you subscribe for 3000 shares, there are three lottery numbers. If you subscribe for 3000 shares at a time, the three numbers are continuous, so even if you draw lots, there is only one lottery. If you subscribe for 1000 shares in three times, all three numbers may win the lottery, but the probability is very small.