Facebook Value

What is the value of Facebook Inc?  The stock is split into 2 classes, with Class A sold on the market under FB and Class B being privately owned, but each share having 10 voting rights.  The number of Class B shares is listed as 551,589,813 as of 12/31/15 here, so I am using the number 551.6 million. Here is the calculated value:

Facebook Stock Valuation
As of April 6, 2016
	Symbol	Shares O/S	Price/Share	Total (M)
Class A	FB	2380	113.71	270,629.80
Class B	(Private)	551.6	113.71	62,722.44
Total				333,352.24