I truly do no understand how to solve this accounting problem. Any help would be appreciated.

Consider the following information for HandyCraft Stores for 2017 and 2017 2018: 2017 2018 Total assets $59,500,000 $56,430,000 Noninterest-bearing current liabilities 4,400,000 4,950,000 Net income 3,650,000 4,950,000 Interest expense 2,420,000 2,975,000 Sales 66,000,000 66,000,000 96,250,000 Tax rate 40% 40% Required a. Compute ROI for both years. b. Break ROI down into profit margin and investment turnover. c. Comment on the change in financial performance between 2017 and 201