It is known that log189 = a, 18b = 5, and log3645 is represented by a and B
∵ 18B = 5, ∵ B = log185, log189 = a, ∵ log3645 = log1845log1836 = log189 + log185log183249 = a + blog18182 − log189 = a + B2 − a
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