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x in (-oo:+oo)
x-((2.5/100)*x) = 408028750 // - 408028750
x-((2.5/100)*x)-408028750 = 0
x-0.025*x-408028750 = 0
0.975*x-408028750 = 0 // + 408028750
0.975*x = 408028750 // : 0.975
x = 408028750/0.975
x = 418491025.64102564
x = 418491025.64102564
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