Questions & Answers about Hankimme uuden tietokoneen.
It is the verb form from hankkia, which means to get, acquire, obtain, procure, and sometimes to buy, depending on context.
So hankimme uuden tietokoneen means something like we got/acquired a new computer. It is a little broader than ostaa (to buy), because hankkia does not always focus on the act of paying for it.
Because the verb ending already shows the subject.
In hankimme, the ending -mme means we. So Finnish does not need a separate pronoun here.
- Hankimme uuden tietokoneen. = We got a new computer.
- Me hankimme uuden tietokoneen. = also possible, but me adds emphasis or contrast.
This is very common in Finnish: subject pronouns are often left out when the verb ending makes the subject clear.