PLEASE ANSWER LAST PART ONLY REQUIREMENT 5 AND 6 ONLY STEP BY STEP Tower Interiors most recently sold 100,000 units at $7.50 each. Its variable operating cost is $3 per unit and its fixed operating cost are $250,000. Annual interest charges total $80,000, and the firm has 8000 shares of $5 (annual dividend) preferred stock outstanding. It currently has 20,000 shares of common stock outstanding. Assume that the firm has a 40% tax rate. Required: i. At what level of sales in units would the firm breakeven on operations. ii. Calculate the firms earning per share in tabular format (i) the current level of sales and (ii) a 120,000 unit sales level. iii. Using the current $750,000 level of sales as base calculate the firms degree of operating leverage iv. Using the EBIT associated with the $750,000 level of sales as a base, calculate the firms degree of financial leverage. v. Calculate the degree of total leverage. vi. Use the degree of total leverage concept to determine the effect (in percentage terms) of a 50% increase in Tower sales from the $ 750,000 base level on its earnings per share.