How to make 2 blocks in one of which has vertical text?

Question

css

Of course, I started typing not long ago, but I got into such a stupor for the first time. I just don't know how to implement 2 blocks together so that one of them has vertical text.
I just have no idea how to implement it in order to get up normally. Constantly a bunch of some place appears superfluous.
How can I do it like this?
I did float left to the left side, to the right right, I tried to adjust the margin with the help of margin, set the height to the first block, but it's not like that.