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n in (-oo:+oo)
n/0.8 = 0.03/10 // - 0.03/10
n/0.8-(0.03/10) = 0
n/0.8-0.003 = 0
1.25*n-0.003 = 0 // + 0.003
1.25*n = 0.003 // : 1.25
n = 0.003/1.25
n = 0.0024
n = 0.0024
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