On January 1, 2018, an investor is considering buying 120 shares of MUFC, which current price is $45 per share. The investor sets a margin of 50% and assumes that there are no brokerage costs. Later, on January 1, 2019, due to a very good first half of the premier league season, the stock rises to $55 per share. At the initial date, how much equity capital must the investor provide to make this margin transaction?