I need help with these questions, can you please give me a detailed explanation on how you came up with these answers...

Thank you in advance!

1. Advantage First Corporation has sales of $4,658,550; income tax of $310,375; the selling, general and administrative expenses of $209,771; depreciation of $314,217; cost of goods sold of $2,992,190; and interest expense of $119,335. What is the amount of the firms EBIT?

2. Evening Story Corporation has sales of $4,511,750; income tax of $341,670; the selling, general and administrative expenses of $286,384; depreciation of $382,924; cost of goods sold of $2,632,730; and interest expense of $185,094. Calculate the amount of the firms gross profit.

3.Banana Box Corporation has sales of $4,458,780; income tax of $354,128; the selling, general and administrative expenses of $243,605; depreciation of $367,437; cost of goods sold of $2,537,370; and interest expense of $175,588. Calculate the amount of the firms income before tax?

4. Garden Pro Corporation has sales of $4,248,330; income tax of $506,748; the selling, general and administrative expenses of $237,536; depreciation of $356,208; cost of goods sold of $2,517,280; and interest expense of $145,632. Calculate the firms net income?

5. Killer Whale, Inc. has the following balance sheet statement items: total current liabilities of $893,856; net fixed and other assets of $1,750,650; total assets of $2,993,590; and long-term debt of $871,014. What is the amount of the firms current assets?

6. Purple Dalia, Inc. has the following balance sheet statement items: current liabilities of $872,026; net fixed and other assets of $1,611,310; total assets of $3,277,620; and long-term debt of $629,277. What is the amount of the firms total stockholders equity?

7. Scare Train, Inc. has the following balance sheet statement items: current liabilities of $629,297; net fixed and other assets of $1,085,330; total assets of $3,152,910; and long-term debt of $780,070. What is the amount of the firms net working capital?

8. Moby Dick Corporation has sales of $4,729,850; income tax of $317,656; the selling, general and administrative expenses of $280,717; depreciation of $323,842; cost of goods sold of $2,870,130; and interest expense of $190,743. Calculate the amount of the firms after-tax cash flow from operations?