please explain this properly

Sheridan Corporation sells a single product for $50. Its management estimates the following revenues and costs for the year 2022: $570,000 $22,800 102,600 22,800 Net sales Direct materials Direct labour Manufacturing overhead-variable Manufacturing overhead-fixed Selling expenses-variable Selling expenses-fixed Administrative expenses-variable Administrative expenses-fixed 68,400 11,400 22,800 11.400 34,200 Your answer is partially correct. Calculate the contribution margin ratio, the annual margin of safety ratio, and the annual operating income. (Round answers to o decimal places, eg. 15 or 15%) Contribution margin ratio 60 Annual margin of safety ratio 98.33 % Annual operating income $ 239.400