Zeilohn, a staffing agency founded by Slovakian entrepreneur Gaius Mann, provides IT staff to businesses and organizations in the Central European market. Zeilohn has 140 full-time managerial and administrative employees, whose collective salaries and benefits amount to €12 million in annual expenses. Other fixed costs amount to €8 million in annual expenses. Zeilohn also works with a pool of contractors, paying them an average hourly rate of €40. Zeilohn’s average billing rate — the amount they charge clients per hour of work — is €140.

How many person-hours does Zeilohn need to contract for per year in order to break even?