I need detailed help with steps on how each of the missing amounts are found, please don't just show answer. I will reward best answer when the right answer is given. I am confused on why the single/more than one product matters and how to calculate.

Question 1 Part A:

Calculate the missing amount in each of the eight case situations below.

Case #1 : Units Sold = 8,900 Sales : $249,200 Variable Expenses : $133,500 Fixed Expenses : $93,000 Net Operating Income = $22,700 Contribution Margin Per Unit = ?

Case #2 : Units Sold = ? Sales : $287,700 Variable Expenses = ? Fixed Expenses = 161,000 Net Operating Income = 3,400 Contribution Margin Per Unit = $12

Case #3 : Units Sold = 19,900 Sales = ? Variable Expenses = 179,100 Fixed Expenses = ? Net Operating Income = 184,600 Contrubution Margin Per Unit = $14

Case #4 : Units Sold = 5,100 Sales = $153,000 Variable Expenses = ? Fixed Expenses = 81,000 Net Operating Loss = 30,000 Contribution Margin Per Unit = ?

Part B) Assume that more than one unit is being sold :

Case #1 : Sales : $454,000 Variable Expenses = ? Fixed Expenses = ? Net Operating Income = 66,600 Contribution Margin Ratio = 40%

Case #2 : Sales = $203,000 Variable Expenses = $133,980 Fixed Expenses = ? Contribution Margin Ratio = ?

Case #3 : Sales = ? Variable Expenses = ? Fixed Expenses = 471,000 Net Operating Income = 94,600 Contribution Margin Ratio = 80%

Case #4 : Sales = $306,000 Variable Expenses = $85,600 Fixed Expenses = ? Net Operating Income = $2,320 CM Ratio = ?

Thanks again :)