From the figures mentioned below of Umbrella Corp, calculate the Weighted Average Cost of Capital (WACC).

Interest expenses	$443 million
Corporate tax rate	30%
Default spread	1.56%
Market Value of short term debt	$885 million
Market Value of long term debt	$9,552 million
Market value of operating liabilities	$1200 million
Total asset of firm	$18,349 million
Systematic risk	0.79
Market value of equity	$21,129 million
Risk free rate	1.7%
Market risk premium	4.72%