a^m * a^n = a^(m+n)
a^(log(a) b) = b
lg = log(10)
10^(1 + lg 4) = 10*10^(lg 4) = 10*4 = 40
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a^m * a^n = a^(m+n)
a^(log(a) b) = b
lg = log(10)
10^(1 + lg 4) = 10*10^(lg 4) = 10*4 = 40