ACME has forecasted the following sales and costs for a new product line: annual sales of $100,000$ units at $$30$ a unit, production costs are $50\%$ of the sales, annual fixed costs are $$500,000,$ and the manufacturing equipment costs $3,000,000.$ The equipment will be depreciated over $10$ years using straight$-$line depreciation. The company tax rate is $25\%$ and has zero interest expense. What is operating cash flow? The answer is $825,000.$ Please explain why it is $825,000.$ Show your work. I appreciate it$!$