Teacher: You are given a sentence in Japanese. Your job is to translate the Japanese sentence into English.
Teacher: Now, understand the problem? If you are still confused, see the following example:
第一にキリバス共和国が彼ら自身の利益になると理解したからです
Solution: And it was primarily because Kiribati realized that this was in their own self-interest to do this.
Reason: The Japanese sentence is correctly translated into English, because the meaning is preserved.

Now, solve this instance: 人々は代わりにユーロに投資しました
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
And this is what people did.