A micro-brewery is considering the installation of a newly designed boiler system that burns the dried, spent malt and barley grains from the brewing process. The boiler will produce process steam that powers the majority of the brewery’s energy operations, saving $450,000 per year over the boiler’s expected life of 10 years. If the interest rate is 12% per year, how much money can the brewery afford to invest in the new boiler system?