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0.81 = (11618000-x)/5424000 // - (11618000-x)/5424000
0.81-((11618000-x)/5424000) = 0
(-1*(11618000-x))/5424000+0.81 = 0
(-1*(11618000-x))/5424000+(0.81*5424000)/5424000 = 0
0.81*5424000-1*(11618000-x) = 0
x-7224560 = 0
(x-7224560)/5424000 = 0
(x-7224560)/5424000 = 0 // * 5424000
x-7224560 = 0
x-7224560 = 0 // + 7224560
x = 7224560
x = 7224560
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