Написать письмо I just got your letter.It was interesting to know

Dear [username],
Thank you for your last letter! I was very happy to get it!

In your letter you asked me about my country. Well, our country is multicultural because every year many people visit Russia and some of them decide to live here. Honestly speaking, I don't pay attention on the number of people who come to live in Russia but, as far as I know, this number isn't little. Of course, this people have some problems in my country. For example, they are not used to live in Russian climate.

Sorry, i have no time. I hope to hear from you soon.
Best wishes,
[username[2]]

Воот, как-то так:/