Lakisha is a professor of economics. She is currently earning $100,000 a year as a professor. She decides to quit her job as a professor and opens a consulting business. In order to do this, she cashes out her retirement fund of $200,000. Her retirement fund has been earning 10% interest each year. At the end of her first year as an economic consultant, she earns $120,000 in accounting profit. What was her economic profit for the year?