Brianna has 6 bags of soil. Filling one flowerpot requires 1/3 of a bag of soil. How many flowerpots can be filled with these 6 bags?

Since filling one flowerpot requires 1/3 of a bag of soil, therefore 6 bags of soil can fill:

6 bags / 1/3 bag = 6 bags * 3 = 18 flowerpots

So, Brianna can fill 18 flowerpots with these 6 bags of soil.