Susan is filling a planter with soil to grow peonies on her front porch.  The planter is 75 cm across, 15 cm wide, and 15 cm deep.  Susan wants to fill the planter with a layer of potting soil that is 12 cm deep, however, soil is sold by mass.  If potting soil has a density of 0.35 g per cm3, how many grams of soil should she buy

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