*140 children will be at a school sports day.
Lily is going to give a cup of orange drink to each of the 140 children.
She is going to put 200 millilitres of orange drink in each cup.
The orange drink is made from orange squash and water.
The orange squash and water are mixed in the ratio 1: 9 by volume.
Orange squash is sold in bottles containing 750 millilitres.
Work out how many bottles of orange squash Lily needs to buy.