This is the 4686th most frequent Russian word.
думаем
"Думаем" means "we think" in English.
The word 'думаем' here denotes the present continuous action of thinking or pondering about future circumstances or plans.
Мы думаем о будущем.
We are thinking about the future.
In this sentence, 'думаем' is used in the sense of forming an opinion or belief about the idea.
Мы думаем, что это хорошая идея.
We think that this is a good idea.
Here, 'думаем' conveys the action of mentally reflecting on or analyzing the book.