The FW of all money spent on rye whiskey over 30 years was $__________ [Units in $K USD]

That Ol Professor of Yours: He drank rye whiskey and spent more and more on it each year. In fact, he spent $150 in year 1 (not bad), but then $300 in year 2 (uh oh), $450 in year 3... up to $750 in year 5. Then he said "OK, this has to stop" only it didn't. He spent the exact same amounts each year in years 6 through 10 as he did in years 1 through 5 (so in year 10 he spent $750 again). Then.... he did it again in years 11 through 15 ... and so on all the way to year 30. That Ol Professor of Yours: He drank rye whiskey and spent more and more on it each year. In fact, he spent $150 in year 1 (not bad), but then $300 in year 2 (uh oh), $450 in year 3... up to $750 in year 5. Then he said "OK, this has to stop" only it didn't. He spent the exact same amounts each year in years 6 through 10 as he did in years 1 through 5 (so in year 10 he spent $750 again). Then.... he did it again in years 11 through 15 ... and so on all the way to year 30