Can someone please tell me the answer and how it was calculated?

2016 (current 2015 (prior year) year) Net sales 62349545 26072585 139.1% 14021 82.4% 21010605 80.6% 144.6% Cost of Goods Sold 1094737117.6% 5061980 19.4% 116.3% Gross Profit 1818126 2.2% 327479 1.3% 455.2% Advertising General & Administrative 806733112.9% 4162408 16.0% 93.8% Total Operating Exp 988545715.9% 4489887 17.2% 120.2% Income from Operations 1061914 1.7% 572093 2.2% 85.6% 17977 0.0% 16237 0.1%| 107% Interest Income Gain on Marketable Securities 0.0% 41962 0.2% 100.0% -2400 0.0% 318400% -24.6% Interest Expense 15577 0.0% 55015 0.2% -717% Total Other 1077491 1.7% 627108 24% 7.8% Income Before Taxes Taxes 536143 0.9% 161000 0.6% 233.0% 541348 0.9% 466108 1.8% 16.1% Net Income 1. What was the percentage increase in sales from 2015 to 2016? 2. What impact did the new sales have on the gross profit? 3. Were the new sales more or less profitable sales based upon their impact on the gross profit? 4. What happened to the advertising expenses &