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(7^11 : 7^2) / (7^(4 +3)) = 7^(11 - 2) / 7^7 = 7^9 / 7^7 = 7^(9 - 7) = 7^2
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(7^11 : 7^2) / (7^(4 +3)) = 7^(11 - 2) / 7^7 = 7^9 / 7^7 = 7^(9 - 7) = 7^2