got the first part right but dont know why i keep getting the last two parts wrong

CALCULATOR PRINTER VERSION BACK NEXT Do It Review 5-5 Sandhill Company makes radios that sell for $30 each. For the coming year, management expects foxed costs to total $248,040 and variable costs to be $18 per unit. Your answer is correct. Compute the break-even point in dollars using the contribution margin (CM) ratio. Break-even point 620100 LINK TO TEXT LINK TO TEXT Your answer is incorrect. Try again. Compute the margin of safety ratio assuming actual sales are $900,000. (Nound margin safety ratio to 2 decimal places, eg. 10.50) Margin of safety LINK TO TEXT LINK TO TEXT Your answer is incorrect. Try again. Compute the margin of safety ratio assuming actual sales are $900,000. (Round margin of safety ratio to 2 decimal places . 10.50.) Margin of safety LINK TO TEXT LINK TO TEXT x Your answer is incorrect. Try again. Compute the sales dollars required to eam net income of $195.960 Required sales 1 1900 Click If you would like to show Work for this questionton Show Work LINK TO TEXT LINK TO TEXT Question Attempts: Jefused