please help!

Polycom Systems earned $$487$ million last year and paid out $24$ percent of earnings in dividends.

a$.$ By how much did the company's retained earnings increase?

Note: Do not round intermediate calculations. Input your answer in dollars, not millions $($e$.$g$.,$ $$1,234,000).$

b$.$ With $100$ million shares outstanding and a stock price of $$163,$ what was the dividend yield? $($Hint: First compute dividends per

share.$)$

Note: Do not round intermediate calculations. Input your answer as a percent rounded to $2$ decimal places.

Dividend yield