I go to the pharmacy:

Hi, please tell me, do you have a Suspension?

It is over, there is powder. 15 rubles a piece.

Give me 10 pieces.

There is a suspension! and 8 pieces.

- Well, give 8 suspensions and 2 powders.

Oh, I was wrong, there are 6 suspensions.

Then give 6 suspensions and 4 powders.

There are only 2 powders left.

Give it all.