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n in (-oo:+oo)
(8^20)/(8^-5) = 8*n // - 8*n
(8^20)/(8^-5)-(8*n) = 0
(8^20)/(8^-5)-8*n = 0
37778931862957161709568-8*n = 0 // - 37778931862957161709568
-8*n = -37778931862957161709568 // : -8
n = -37778931862957161709568/(-8)
n = 4722366482869645213696
n = 4722366482869645213696
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