The table below shows the values for several different components of GDP.

Component Value (billions of dollars)
Consumer durables $1,329.0
Consumer nondurables 2,679.0
Services 8,112.3
Business fixed investment 2,850.0
Residential fixed investment 578.0
Inventories 93.3
Exports 2,352.3
Imports 2,901.5
Government purchases 3,189.3

Requried:
What is the value of total gross investment?