A multinational corporation invests in a state$-$of$-$the$-$art satellite system for global communications at a cost of $$50,000,000.$ The salvage value is projected to be $$5,000,000$ after $20$ years of usage. Additionally, the company estimates the technology will become obsolete after $15$ years, and its value will decrease significantly. Calculate the annual straight$-$line depreciation expenses considering both salvage values and the technologys obsolescence.