A concentrated liquid fertilizer used in hydroponics contains potassium nitrate.
400 cm3400\text{ cm}^3400 cm3 of this fertilizer solution contains 14.8 g14.8\text{ g}14.8 g of potassium nitrate.
Calculate the mass of potassium nitrate in 2.5 dm32.5\text{ dm}^32.5 dm3 of the fertilizer solution.