How many 250 ml bottles can be filled from 400 liters of water?

Each liter of liquid is equivalent to `1000` `ml`.

Hence in each liter, we have `1000/250=(4cancel(1000))/(1cancel(250))` or four (`4`) `250` `ml` bottiglie.

E in `400` liter, we will have `400xx4=1600` such bottles.