Can you help me with the below, please? I am confused as to what numbers I placed in the $25\%$ increase box for companies A and B$.$

Company A has current sales of $$10,000,000$ and a $45\%$ contribution margin. Its fixed costs are $$3,000,000.$ Company B is a service firm with current service revenue of $$5,000,000$ and a $20\%$ contribution margin. Company B$$s fixed costs are $$500,000.$ Compute the degree of operating leverage for both companies. Which company will benefit most from a $25\%$ increase in sales? Explain why. Company that will benefit the most: A Reason: