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= log 63 + log 3 / log 3 + log 7
= log 7 + log 9 + log 3 / log 3 + log 7
= log 7 + log + log 3 / log 3 + log 7
= 7log 7 + 7log + 7 log 3 / 7log 3 + 7log 7
= 1 + 2a + a / a + 1
= 1 + 3a / a + 1