Erica sees 9 butterflies in the garden.  She sees one-third of them fly away.  How many butterflies are left in the garden?
How many butterflies fly away? ** Erica sees 9 / 3 = <<9/3=3>>3 butterflies fly away.
How many butterflies are left in the garden? ** There are 9 - 3 = <<9-3=6>>6 butterflies still left in the garden.
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