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First, we simplify the expression within the parentheses:
(13 - 11) = 2
Next, we simplify the division and multiplication operations from left to right:
12 ÷ 4 = 3
3 ⋅ 5 = 15
15 ⋅ 4 = 60
60 ÷ 2 = 30
Therefore, the fully simplified expression is 30.