Interest versus dividend income Last year, Shering Corporation had pretax earnings from operations of $497,000. In addition, it received $27,000 in income from interest on bonds it held in Zig Manufacturing and received $27,000 in income from dividends on its 5% common stock holding in Tank Industries, Inc. Shering is in the 21% tax bracket and is eligible for a 50% dividend exclusion on its Tank Industries stock.. a. Calculate the firm's tax on its operating earnings only. b. Find the tax and the after-tax amount attributable to the interest income from Zig Manufacturing bonds. c. Find the tax and the after-tax amount attributable to the dividend income from the Tank Industries, Inc., common stock. d. Compare, contrast, and discuss the after-tax amounts resulting from the interest income and dividend income calculated in parts b. and c. e. What is the firm's total tax liability for the year? a. The tax on operating earnings is $ . (Round to the nearest dollar.)