Please provide the formula used for these problems

1) Ajack Co. reported the following for 2017: Sales = $3MM; Cost of Goods Sold = $1.5MM; Depreciation Expense = $170K; Administrative Expenses = $150K; Interest Expense = $30K; Marketing Expenses = $80K; and Taxes = $300K. Ajack's gross profit is equal to

$770K

$1.07MM

$1.1MM

$1.5MM

2) The Aleris Company reported Net Profit Margin of 4%, COGS of $800K, Taxes of $34K, Sales of $2MM, Interest Expense of $65K and Operating Expenses of $280K for the period.

What is its EBIT?

What is its Net Income?

3) The Markel Company reported Net Profit Margin of 2.5%, COGS of $1.8MM, Operating Margin of 7%, Interest Expense of $105K and Taxes of $89K

Is its GM less than or greater than its Operating Margin?