Let's see the meanings of the dream according to the context:

• dreaming of a mill: denotes work and luck; play the number 89
• dreaming of mills: indicates luck, wealth, inheritance from a very rich relative. Play the number: 5
• dreaming of windmills: denotes that work gives a lot of satisfaction; play the number 13
• dreaming of a mill that doesn't work: announces stagnation in work; play the number 17