Question about coco bricks

How many bricks will I need to fill 6 5g containers?
Thank you.

1 US Gal - 3.8L so… 5 x 3.8L approx. 20L per and 6 x 20 = 120L coco

@Pet_de_Chien . Thank you

I expand a 5 kilo brick and get about 16 gallons. After I mix compost and perlite to it I have a little over 20 gallons of soil