debt ratio formulas

Whats AAPL (apple computers stock) growth rate of earnings?
the formula says it has to be like this.
g= ROE * (1- Payout ratio)
but how im i supposed to calculate it if there is not a payout ratio avaibale for apple, do you know why? they dont have dividends yield and debt / equity neither.
Not all formulas will fit in all places. Try graphing the profits over the period and using the slope instead of payout ratio.


