CTET Class I to V 27 Dec 2021 Paper

Aneesh makes a bucket full of lemon drinks to sell at the fair. He has a bucket, small glass and large glass respectively, which can contain 20 litres, 250 ml, and 400 ml of lemon drink. If Aneesh has sold 45 small glasses and 21 large glasses of lemon drinks, then how much lemon drink has been left in the bucket?