Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Erica sees 9 butterflies in the garden.  She sees one-third of them fly away.  How many butterflies are left in the garden?

### Response:
Erica sees 9 / 3 = <<9/3=3>>3 butterflies fly away.
There are 9 - 3 = <<9-3=6>>6 butterflies still left in the garden.
#### 6