Key comparative figures for Apple and Google follow. $ millions Net sales Cost of sales Apple Current Year Prior Year $265,595 $229, 234 $ 163, 756 $141, 048 Google Current Year Prior Year $136,819 $110,855 $ 59,549 $ 45,583 Required 1. Compute the amount of gross margin and the gross margin ratio for the two years shown for each of these companies. 2. Which company earns more in gross margin for each dollar of net sales for the current year? 3-a. Does the company's current-year gross margin underperform or outperform the 35% industry average in the case of Apple? 3-b. Does the company's current-year gross margin underperform or outperform the 35% industry average in the case of Google? 4-a. Is the change in the company's current-year gross margin favorable or unfavorable for Apple? 4-b. Is the change in the company's current-year gross margin favorable or unfavorable for Google? Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Required 4 Compute the amount of gross margin and the gross margin ratio for the two years shown for each of these companies. (Enter your dollar answers in millions. Round your percentage answers to 1 decimal place.)