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

### Instruction:
At the aquarium, there are twice as many sharks as stingrays. If there are 28 stingrays, how many fish are there?

### Response:
If sharks are twice as many as stingrays, and there are 28 stingrays, there are 2*28 = <<2*28=56>>56 sharks
In all, there are 28+56 = <<28+56=84>>84 fish
#### 84