Please help me to solve this exercise

PRELIMINARY Exercise 1) Break even analysis The operating data for two different companies follows Digir Co Sales units Average unit price Variable unit cost Fixed costs 20.000 C600 100 6.000,000 Xibleflex Co.- 20.000 200 150 800.000 Required: a) Compute the break-even point of both companies in sales dollars and units. b) Determine the degree of operating leverage for each company c) Calculate the margin of safety for both Digir and Xibleflex