please answer showing cell/sum functions (example: =B5-B8) thank you!

Paste B I U a. Av 191 Merge & Center $ % ) A1 fx Chapter 5: Applying Excel D E F G H B 1 Chapter 5: Applying Excel 2 3 Data 4 Unit sales 20,000 units 5 Seling price per unit $60 per un 6 Variable expenses per unit $45 per un 7 Fixed expenses $240,000 B 9 Enfer a formule into each of the cells marked with a ? below 10 Review Problem: CVP Relationships 11 12 Compute the CM ratio and variable expense ratio 13 Seling price per unit 7 per unit 14 Variable expenses per unit 2 per unit 15 Contribution margin per unit ? per unit 16 7 17 CM ratio 18 Variable expense ratio ? 19 20 Compute the break-even 21 Break-even in unit sales ? units 22 Break-even in dollar sales ? 23 24 Compute the margin of safety 25 Margin of safety in dollars ? ? 26 Margin of safety percentage 27 28 Compute the degree of operating leverage 29 Sales 7 30 Variable expenses 7 31 Contribution margin ? 32 Fixed expenses ? 33 Net operating income ? 34 35 Degree of operating leverage ? 36 37 38 39 40