The annual revenue earned by Target for fiscal years 2004 through 2010 can be approximated by

R(t) = 41e^0.094t billion dollars per year (0 t 7),

where t is time in years (t = 0 represents the beginning of fiscal year 2004). Suppose that, from the start of fiscal year 2004 on, Target invested its revenue in an investment that depreciated continuously at a rate of 2% per year. What, to the nearest $10 billion, would the total value of Target's revenue from the beginning of fiscal year 2006 to the beginning of fiscal year 2010 have been at the beginning of fiscal year 2010?