I am getting an error for my formula for WACC. What am I doing wrong here?

Value of equity = 17.5 billion

Value of debt as per 2018 10-K financial statements = 643.5 million + 4052.9 million = 4696.4 million.

Cost of debt = 4%

Cost of equity = 8.76%

Tax rate = 27.5%

5. Calculate the Weighted Average Cost of Capital (WACC)for McCormick and Company using the formula

WACC = WD RD (1-T) + WSrS and WD = Value of debt / Value of debt plus value of equity; WS = Value of Stock Equity/ Value of Debt Plus Value of Equity. For ease, the CFO says to use book value of Debt andthe market Value of Equity.On February 26, 2019 the market Value of Equity (or Market Cap) in Yahoo was $17.5 billion.Use the 2018 10-K Financial Statements filed January 25, 2019 and look on the Balance sheet to see the total of Short term borrowings, Current portion of long term debt and Long term debt.Use 4% for the cost of debt.Use 27.5% as the tax rate - a combination of federal and state income tax.