Harrison Brothers are in the process of expanding their business. Project A has annual fixed costs of $$2,500,000$ while project B has annual fixed costs of $$1\mathrm{.}5$m$.$ Project A has depreciation and amortization of $$500,000$ and project B has depreciation and amortisation of $$300,000.$ These projects relate to radio antennas. These antennas will sell for $$50$ each. The variable costs for project A are $$20$ and $$30$ for project B$.$ The EBIT of project A is $$1,500,000$ and the EBITDA of Project B is $$800,000.$

Calculate the Cash Flow Cross Over Level of Unit Sales. what is the formula for cash flow cross over levels and accounting cross over levels?