can you give the explanations?

Ocean Compary sels a product with a contribution magin ratio of 80%. Fixed cests are $4,600 per month. What amount of sales (in dollars) must Ocean Conpany have to eam an operiting income of $8,000 if each unit sels for $30, how many units mest be sold to achieve the desiced oporating income? Begn by thowing the formula and then entering the armounts to calculate the salen in dollars Ocean must have to earn an cperating income of 38,000 . (Abereviation used CM = contilition margin) = Rogured sales in whins in