quick please and all the requirements

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Requirements 1. Compute the net profit margin ratio for Shopper's World for the years ended December 31, 2020, and December 31, 2019. 2. Compute asset turnover for Shopper's World for the years ended December 31,2020, and December 31, 2019. 3. Compute return on assets for Shopper's World for the years ended December 31, 2020, and December 31, 2019. 4. What factors contributed to the change in return on assets during the year? Data table Shopper's World Corporation Partial Balance Sheets (Condensed)