Using the following link to obtain CPI data (https://research.stlouisfed.org/fred2/data/CPIAUCSL.txt), find the value of

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Using the following link to obtain CPI data(https://research.stlouisfed.org/fred2/data/CPIAUCSL.txt), find thevalue of the CPI in May of 1958 and answer the followingquestions:Calculate the ex-post real rate of interest from January 2012to January 2013.Calculate the ex-ante real rate of interest from January 2012to January 2013. To do so, you need data on expected inflation(https://research.stlouisfed.org/fred2/data/MICH.txt). Note thatall data on expected inflation is based on expectations for thenext 12 months - for example, to make sure we are on same page,verify that the expected rate of inflation from January 2010 toJanuary 2011 was 2.8%.