2) A block of three flats is leased on a periodic tenancy with a gross rental income of $30026 per annum. The value of the property at the beginning of the investment period is $497457. For the block of flats, operating expenses including vacancies cost $9840 per annum. What is the gross return on this investment? (Please type your answer in decimals and round your answer to four decimal places. For example, 10.11% should be 0.1011.)