Marty purchases a three unit apartment building already fully occupied. He agrees to pay $250,000 for the apartment building. Rent are $3,000 per month. Marty borrows money from a bank and agrees to pay $1,250 per month for the principle and interest on a $225,000 loan. In effect, Marty pays $25,000 out of his pocket to buy the building. Over a course of five years, Marty pays $7,000 of principle on the note and the real estate market grows at 2.1% per year. How much value (equity) does Marty earn using leverage?