An economy’s capital stock was $46.3 trillion at the end of 2010, $46.6 trillion at the end of 2011, and $47.0 trillion at the end of 2012. Depreciation in 2011 was $2.4 trillion, and gross investment during 2011 was $2.8 trillion (all in 2007 dollars). 

Calculate net investment and gross investment during 2011.