Skibbe, Inc. had the following information reported. From these data, determine the amount of :

Capital stock at December 31, 2005
Retained Earnings at December 31, 2006
Revenues for the year 2006

Equipment 7/30 1500
Land 7/30 4000
Accounts Pay. 7/25 5000
7/10 20000
Bal. 15000
Sales Revenue 7/14 18000
Goods Sold 7/14 15000
Advertising Exp. 7/1 3420
Rent Expense 7/23 2000

How do you compute the mising quanities for an expanded accounting equation?