Robert purchased and plaed in service $100,000 of seven-year class assets on August 10 of the current year. He also purchased and placed in service $500,000 of five-year class assets on November 15 of the current year. He elects not to take additional first-year depreciation. If Robert elects to use the MACRS straight-line method of cost recovery on the seven-year class assets, discuss the calculation of cost revovery for the five-year class assets.