Turnover: 400 people X 2 meals X full coefficient of 0.9 X 30 days X meal rate of 6 yuan = 130,000 yuan

Expenses: labor costs - 6 people X 2500 yuan + 2 people X 3500 yuan = 22,000 yuan

Water, electricity, and gas expenses --10,000 yuan

House rental -- 800 square feet X 10 yuan = 0.8 million yuan

Equipment depreciation -- 0.2 million yuan

p> Property management fee - 800 X $1.5 = 0.12 million yuan

Low value consumables - 0.08 million yuan

Taxes and other **** counted more than $50,000

What kind of profit margins to meet the capital preservation, do the math.