Catatonia bought a duplex apartment at a cost of $$520,000.$ Her mortgage payments on the property are $$1,940$ per month, which includes $$1,720$ of interest, which can be deducted from her income taxes. Her mortgage payment does not include the real estate taxes, which total $$1,630$ per year, nor insurance costs at $$2,100$ per year. Catatonia estimates that she will spend $$1,000$ each year per apartment for maintenance, replacing appliances, and other costs. The tenants will pay for all utilities.

What monthly rent must she charge for each apartment to break even?

What must she charge for each apartment's rent to make $$12,000$ in profit each year?