How to say 'finally' as in 'after waiting a long time'


How do I say 'finally' as in 'after waiting a long time' in a sentence? Do I
use '最後に'?

> Hanako can finally buy the textbook.

> 花子さんは教科書を最後に買えます。

Or does 最後に only mean 'finally' as in 'last in sequence'




@Will Thank you for this relevant link. とうとう seems to be what I'm looking for.
[Differences between いよいよ / やっと / ようやく / ついに and
とうとう](https://japanese.stackexchange.com/questions/12682/differences-
between-%e3%81%84%e3%82%88%e3%81%84%e3%82%88-%e3%82%84%e3%81%a3%e3%81%a8-%e3%82%88%e3%81%86%e3%82%84%e3%81%8f-%e3%81%a4%e3%81%84%e3%81%ab-
and-%e3%81%a8%e3%81%86%e3%81%a8%e3%81%86)

