Zepher Company sells a product with a contribution margin ratio of 10%. Fixed costs are $393 per month. What amount of sales (in dollars) must Zepher Company have to break even? If each unit sells for $30, how many units must be sold to break even?

Begin by showing the formula and then entering the amounts to calculate the sales in dollars Zepher must have to break even. (Abbreviation used: CM = contribution margin. Complete all input boxes. Enter a "0" for items with a zero value.)