This is for ECON-251 chapter 6 Markets: Price Ceiling, Floors, Taxes and Subsidies. I think I have first fill the blank correct with 300 apartments shortage by at price $400 per month of quantity demand 500 subtract by quantity supplied 200 equals 300 but I am not sure about the other blank. Should I put zero instead since there is no shortage occur?

Partial Question 2 0.34 / 0.67 pts Price Quantity Quantity (dollars per supplied demanded month) (apartments) (apartments) $300 1,000 700 $400 200 500 $500 400 400 $600 500 200 $700 600 100 The above table shows the market for apartment. If a rent ceiling is set at a price of $400 per month, then the housing shortage is 300 apartments. If a rent ceiling is set at a price of $600 per month, then the housing shortage is 300 apartments