The operation ⊗ is defined on the set of real numbers by a ⊗ b = 2a + ab, where a and b are real numbers and the operations on the right side of the equal sign denote the standard operations for the real number system. What is (3 ⊗ 2)⊗5?

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The operation ⊗ is defined on the set of real numbers by <em>a</em> ⊗ <em>b</em> = 2<em>a</em> + <em>ab</em>, where <em>a</em> and <em>b</em> are real numbers and the operations on the right side of the equal sign denote the standard operations for the real number system. What is (3 ⊗ 2)⊗5?