Worked example $$ shares by CAPM

From the past history of its share price, a company is

found to have an equity beta of $0\mathrm{.}85.$

It currently has $100$M shares outstanding at a price

of $$1\mathrm{.}85$ per share.

Treasury bills are yielding $2\%$ and we expect the S&P

$500$ index to return $8\%.$ The tax rate is $30\%.$

How does this look in the WACC equation?