How to calculate this question on HP 10bll+? The answer is $946,261, and I want to know how to use the calculator.

The potential owner/managers of the yet to be formed new In-Line Blade company are evaluating the prospects for the business. The new equipment is expected to be $5.2 million in year 0 and have after-tax cash flow of $400,000 for the first two years, $750,000 in the next two years, and $1,200,000 per year thereafter indefinitely. The owners estimate that they require a 15% rate of return. What is the net present value of the company?