If the 12 students had shared the 108 oranges, each student would have gotten 108/12 = <<108/12=9>>9 oranges
But 36 were removed so there are 108-36 = <<108-36=72>>72 oranges left
So 12 shared 72 for each to get 72/12 = <<72/12=6>>6 oranges
This is 9-6 = <<9-6=3>>3 less than they would each get if they did not have to throw any orange away.
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