how many; by how much
На сколько ты хочешь похудеть?
How much weight do you want to lose?
На сколько процентов наше тело состоит из воды?
What percentage of our body is made up of water?
How late am I?
На сколько килограмм Вы хотите похудеть?
How many kilograms do you want to lose?
How much weight have you lost?
How late are you?
"На сколько вопросов ты ответил правильно?"–"Ни на сколько".
“How many questions did you get right?” “None.”
How much weight have you gained?
На сколько ты намерен остаться в Австралии?
How long do you intend to stay in Australia?