English to French Social Sciences Real Estate Property buying in the US

The investor is buying distressed properties in the US with cash. Once they are renovated, he rents them and gets a rent each month on each property.

Complete sentence:

"Look at your investment from a cash-on-cash basis; once you’ve paid your mortgage, you’re left with X amount of dollars per month, and if you add that dollar amount up over twelve months, how does that compare to the money that you invested?"

Merci.