Can someone show me step by step in Excel how to solve this.

Beta, Gamma, and Delta companies are similar in every way except for their capital structures. Beta is an all-equity firm with $3,600,000 of value and 100,000 shares outstanding. Gamma is a levered firm with the same value as Beta but $1,080,000 in debt at 9% and 70,000 shares outstanding. Delta is a levered firm with $2,160,000 in debt at 12% and 40,000 shares outstanding. What are the break-even UNITs for Beta and Gamma, Beta and Delta, and Gamma and Delta companies if the corporate tax rate is 40% for all three companies?